“Some find they can practice effectively by bringing attention to the arising of like, dislike and indifference in their meditation practice and daily life. Others are able to use the power of loving kindness, compassion, equanimity, or devotion to change the way they experience things. And still others develop or naturally have enough capacity in awareness that they experience attraction as delight, aversion as clarity, and indifference as non-thought.”

The Spiral Staircase: My Climb Out of Darkness (2004)
Context: The one and only test of a valid religious idea, doctrinal statement, spiritual experience, or devotional practice was that it must lead directly to practical compassion. If your understanding of the divine made you kinder, more empathetic, and impelled you to express this sympathy in concrete acts of loving-kindness, this was good theology. But if your notion of God made you unkind, belligerent, cruel, or self-righteous, or if it led you to kill in God's name, it was bad theology. Compassion was the litmus test for the prophets of Israel, for the rabbis of the Talmud, for Jesus, for Paul, and for Muhammad, not to mention Confucius, Lao-tsu, the Buddha, or the sages of the Upanishads.

Source: Memoirs of a Superfluous Man (1943), p. 34
Context: Our preceptors were gentlemen as well as scholars. There was not a grain of sentimentalism in the institution; on the other hand, the place was permeated by a profound sense of justice. … An equalitarian and democratic regime must by consequence assume, tacitly or avowedly, that everybody is educable. The theory of our regime was directly contrary to this. Our preceptors did not see that doctrines of equality and democracy had any footing in the premises. They did not pretend to believe that everyone is educable, for they knew, on the contrary, that very few are educable, very few indeed. They saw this as a fact of nature, like the fact that few are six feet tall. … They accepted the fact that there are practicable ranges of intellectual and spiritual experience which nature has opened to some and closed to others.

High Times interview (2002)

Pt. 1 : Right Practice "The Marrow of Zen", p. 29
Zen Mind, Beginner's Mind (1973)

Experiments and Observations of Different Kinds of Air (1775)

May Your Hearts Blossom (1993)