For a few years I used an email client that allowed me to add a random quote at the end of each mail. This comes from BBSs, where software such as Blue Wave had many options to work with "taglines".
"First, the preliminaries."
"Regard all dharmas as dreams."
"Make priorities according to the perfection of wisdom."
"If merit is an illusion, why it is not abundant at fall?". Larry, Madhyamakavatara San Francisco, DJKR
"Let's give the chicks a thrill!" Lama Rigdzing, taking of his shirt
"Abandon alcohol, drugs, pornography, television, videogames, industrialized soft drinks and poisonous foods."
"Don't drink coca-cola."
"Don't go to McDonalds (or Burger King)."
"If a big yellow M appears, just remember the dharma."
"Do not look away."
"How about 100 prostrations now?"
"Abandon hope and fear, optimism and pessimism."
"Do not get involved with criticism and flattering: ignore them completely."
"Let the opponent win."
"Examine the nature of intrinsic consciousness."
"Allow for the antidote to liberate itself."
"In post-meditation, be a child of illusion."
"When the world is filled with evil, turn all adversity into the path of the Buddha."
"Be grateful to all."
"Regarding confusion as the four kayas is the protection of shunyata."
"Just open your mouth and you will fall in contradiction." Jigme Lingpa
"Mingle meditation with everything unexpected."
"All dharma converges to a single point."
"Always stay with a happy mind."
"If you can practice even while distracted, then you are liberated."
"Change your attitude, but remain natural."
"Don't think about other people's faults."
"Work first with the biggest imperfections."
"We should always increase love and compassion and avoid anger."
"Abandon all expectations of result."
"Renounce poisonous food."
"Don't be so predictable."
"Don't criticize others."
"Don't take things to a painful pont."
"Learn languages in which the dharma has been extensively taught".
"Only by doing nothing will you do all there is to be done."
"Just remember the lama."
"Just don't know."
"Vision as the sky, discernment as the grain of flour." Guru Rinpoche
"Let phenomena play". Trungpa Rinpoche
"Let phenomena play fool of themselves." Trungpa Rinpoche
"Don't try to be the best, and don't be the worst."
"Don't try to be the fastest."
"Don't act through machinations".
"Don't transform gods in demons."
"Keep going." Chagdud Rinpoche
"Today, certainly, we whole day has, not know." Chagdud Tulku Rinpoche
"You are sitting on the earth and you realize that this earth deserves you and you deserve this earth. You are there—fully, personally, genuinely."
"'Today we not die', this certainty not have." Chagdud Tulku Rinpoche
"Practice diligently—now is the time." Chagdud Tulku Rinpoche
"Only this times opportunity you now have, long last benefit doing virtue." Chagdud Tulku Rinpoche
"This opportunity times, you why lazy and why waste?" Chagdud Tulku Rinpoche
"You really think, contemplation, impermanent, then you do practice and quickly accomplishes. What time death comes, this time you confident: 'death?' - this O.K. thinks.This kind confident not has, then your life what purpose?" Chagdud Tulku Rinpoche
"The big mind doesn't mind." Lama Tsering Everest
"Sometimes nothing works, and the end is certain, but primordial freedom always remains untouched."
"This is a dream."
"80% is perfect."
"Make the Internet a virtual pure land."
"Just remember the lama."
"Things are not what they seem to be, nor are they anything else."
"A learned one must not even remain in the middle." Arya Nagarjuna
"Living with the immediacy of death helps you sort out your priorities in life. It helps you to live a less trivial life."
"Two aspects to the relative world: relaxation and time management."
"Absolute is beyond extremes, relative is an illusion."
"When you're deluded, every statement is an ulcer; when you're enlightened, every word is wisdom."
"The mind that does not understand is the Buddha. There is no other."
"No thought, no reflection, no analysis, no cultivation, no intention; let it settle itself."
"Inside the zendo also dancing evening maple leaves."
"Ride your horse along the edge of a sword; hide yourself in the middle of flames."
"All conditioned things are impermanent. Work out your own liberation with diligence."
"No matter how many years you sit doing zazen, you will never become anything special."
"Hope and fear cannot alter the season."
"The basic wisdom of Shambhala is that in this world, as it is, we can find a good and meaningful human life that will also serve others. That is our true richness."
"How you act when you're alone affects the rest of your life."
"Sell your cleverness and buy bewilderment." Rumi
"That the world is, is the mystical." Wittgenstein
"Become aware of what is in you. Announce it, pronounce it, produce it and give birth to it." Meister Eckart
"Life is a humorous situation, but it is not mocking us." Trungpa Rinpoche
"It is worthwhile jumping to find out what will happen." Trungpa Rinpoche
"In working with ourselves, cleaning up begins by telling the truth. We have to shed any hesitation about being honest with ourselves because it might be unpleasant." Trungpa Rinpoche
"For the true warrior, there is no warfare. This is the idea of being all-victorious. When you are all-victorious, there is nothing to conquer, no fundamental problem or obstacle to overcome." Trungpa Rinpoche
"Success or failure.....are regarded neither as punishment nor as congratulation. You trust, not in success, but in reality... You can always go beyond the result; it is the seed for a further journey." Trungpa Rinpoche
"For the warrior, every moment is a challenge to be genuine, and each challenge is delightful." Trungpa Rinpoche
"There is some principle of magic in everything, some living quality. Something living, something real is taking place in everything." Trungpa Rinpoche
"The world is very interesting wherever you go, wherever you look." Trungpa Rinpoche
"This very moment is the perfect teacher, and, lucky for us, it’s with us whevever we are." Pema Chodron
"The interesting question is—what happens next?" Pema Chodron
"Learn to meet whatever arises with curiosity and not make it such a big deal. Pema Chodron
"To the degree that we look clearly and compassionately at ourselves, we feel confident and fearless about looking into someone else’s eyes." Pema Chodron
"Use what seems like poison as medicine. We can use our personal suffering as the path to compassion for all beings." Pema Chodron
"Mind. Mind is nothing. Mind is luminous." Buddha
"What truly heals is gratitude and tenderness." Pema Chodron
"In meditation you take an unbiased approach. You let things be as they are, without judgment, and in that way you yourself learn to be." Trungpa Rinpoche
"It's all Ati. Now, let's be practical." Trungpa Rinpoche
"Approach what you find repulsive, help the ones you think you cannot help, and go to places that scare you." Machig Labdron
"Things get very clear when you're cornered." Trungpa Rinpoche
"Become as resourceful in inspiring yourself to enter your own peace as you are at being neurotic and competitive in the world." Sogyal Rinpoche
"Be alert for any sign of beauty and grace." Sogyal Rinpoche
"To embody the transcendent is why we are here." Sogyal Rinpoche
"You must be the change you wish to see in the world." Mahatma Gandhi
"Anything anyone does anywhere affects everything everywhere. Think about this."
"There is no situation, however seemingly hopeless or terrible,......which we cannot use to evolve. And there is no crime or cruelty that sincere regret and real spiritual practice cannot purify." Sogyal Rinpoche
"The stronger and greater your compassion, the stronger and greater your fearlessness and confidence." Sogyal Rinpoche
"Others are my main concern. When I notice something of mine, I steal it and give it to others." Shantideva
"Like it or not, if you look at your own mind you will discover it is void and groundless; as insubstantial as empty space." Guru Rinpoche
"The Buddha taught some people the teachings of duality that help them avoid sin and acquire spiritual merit. To others he taught non-duality, that some find profoundly frightening." Nagarjuna
"Even offering three hundred bowls of food three times a day does not match the spiritual merit gained in one moment of love." Nagarjuna
"All philosophies are mental fabrications. There has never been a single doctrine by which one could enter the true essence of things." Nagarjuna
"My religion is to live and die without regret." Milarepa
"Know emptiness, be compassionate." Milarepa
"Do not speak unless it improves on silence."
"Parting is such a sweet sorrow". Shakespeare
"Being fooled into trying to make things work out for 'me' is called samsara." Sakyong Mipham Rinpoche
"The victorious ones say that emptiness undermines all dogmatic views.Those who take a dogmatic view of emptiness are said to be incurable." Nagarjuna
"Things derive their being and nature by mutual dependence and are nothing in themselves." Nagarjyna
"So, to praise others for their virtues - Can but encourage one's own efforts." Nagarjuna
"The logs of wood which move down the river together Are driven apart by every wave. Such inevitable parting should not be the cause of misery." Nagarjuna
"If you desire ease, forsake learning." Nagarjuna
"The relative is stated to be emptiness, and emptiness itself is but the relative. Without the first, the second is not present, just as with creation and impermanence." Nagarjuna
"Neither from itself nor from another, nor from both, nor without a cause, does anything whatever, anywhere arise." Nagarjuna
"There is pleasure when a sore is scratched, But to be without sores is more pleasurable still. Just so, there are pleasures in worldly desires, But to be without desires is more pleasurable still." Nagarjuna
"What need is there to say more? The childish work for their own benefit, the buddhas work for the benefit of others. Just look at the difference between them." Shantideva
"If I do not exchange my happiness for the suffering of others, I shall not attain the state of buddhahood and even in samsara I shall have no real joy." Shantideva
"For as long as space exists and sentient beings endure, may I too remain, to dispel the misery of the world." Shantideva
"Whoever wishes to quickly afford protection to both himself and others should practice that holy secret: the exchanging of self for others." Shantideva
"The true meaning of the precepts is not just that one should refrain from drinking alcohol, but also from getting drunk on nirvana." Bassui
"Anything that is created must sooner or later die. Enlightenment is permanent because we have not produced it; we have merely discovered it." Chogyam Trungpa
"Strong and healthy, who thinks of sickness until it strikes like lightning? Preoccupied with the world, who thinks of death, until it arrives like thunder?" Milarepa
"Through the power of habit I have come to view an insignificant sperm and egg as myself." Shantideva
"All happiness comes from the desire for others to be happy. All misery comes from the desire for oneself to be happy." Shantideva
"Ask NOT what your sangha can do for you—ask what you can do for your sangha."
"Do not confuse yourself with a lot of thinking." Dudjom Rinpoche
"Let’s Be Real. When We Start Our Paths to Enlightenment, We Aren’t Beautiful, Peaceful or Smart. That’s O.K." Chogyam Trungpa Rinpoche
"Meditation is Not Making You a Better Person – It is Revealing the Person You Are" Chogyam Trungpa Rinpoche
"Fearlessness Only Arises from True Tenderness" Chogyam Trungpa Rinpoche
"War Only Arises from Within a Mundane Mind" Chogyam Trungpa Rinpoche
"The Ego Will Appropriate Even Spirituality to Try to Save its Own Ass" Chogyam Trungpa Rinpoche
"Your Heart Isn’t Really Open Until It Stays Loving While People Are Tormenting You" Chogyam Trungpa Rinpoche
"Sanity Looks Nothing Like You Thought" Chogyam Trungpa Rinpoche