“Cultivate quietness in word, quietness in deed, likewise in speech and gait; and avoid impetuous eagerness, for then the mind will remain steady, and will not be agitated by your eagerness. … For the mind, seated on high on a quiet throne looking intently towards God, must control the passions, … so that your quietness may be adorned by good proportion and your bearing may appear something divine.”

So Quiet In Here
Song lyrics, Enlightenment (1990)

24 May 2005 letter to Prime Minister Laisenia Qarase

2nd Public Talk, Amsterdam, The Netherlands (12 May 1968)
1960s

Source: The Cabinet Council (published 1658), Chapter 25

Source: Farmer in the Sky (1950), Chapter 13, “Johnny Appleseed” (p. 131)

As translated in A Dazzling Darkness: An Anthology of Western Mysticism (1985) by Patrick Grant
Context: The most powerful prayer, one wellnigh omnipotent, and the worthiest work of all is the outcome of a quiet mind. The quieter it is the more powerful, the worthier, the deeper, the more telling and more perfect the prayer is. To the quiet mind all things are possible. What is a quiet mind? A quiet mind is one which nothing weighs on, nothing worries, which, free from ties and from all self-seeking, is wholly merged into the will of God and dead to its own.

1982, quoted in John Cage Visual Art: To Sober and Quiet the Mind, ISBN 1891300164
1980s