“Emptiness is not what we thought. Neither is mindfulness or fear. Compassion—not what we thought. Love. Buddha nature. Courage.”

Nan Yar = Who am I?

Space: What love's got to do with it - The Space Review (2004)

They are repetitive, producing mechanical activities which are a necessary part of existence. But they are only part, and thought and feeling cannot possibly enter into the immensity of life. Quite a different approach is necessary, not the path of habit, association and the known; there must be freedom from these. Meditation is the emptying of the mind of the known. It cannot be done by thought or by the hidden prompting of thought, nor by desire in the form of prayer, nor through the self-effacing hypnotism of words, images, hopes, and vanities. All these have to come to an end, easily, without effort and choice, in the flame of awareness.
Source: 1970s, Meditations (1979), p. 105

As rendered by T. Byrom (1993), Shambhala Publications.
There is no quote from the Pali Canon that matches up with any of these. The closest quote to this is in the Majjhima Nikaya 19:
"Whatever a monk keeps pursuing with his thinking & pondering, that becomes the inclination of his awareness. If a monk keeps pursuing thinking imbued with sensuality, abandoning thinking imbued with renunciation, his mind is bent by that thinking imbued with sensuality. If a monk keeps pursuing thinking imbued with ill will, abandoning thinking imbued with non-ill will, his mind is bent by that thinking imbued with ill will. If a monk keeps pursuing thinking imbued with harmfulness, abandoning thinking imbued with harmlessness, his mind is bent by that thinking imbued with harmfulness." Sources: http://www.accesstoinsight.org/tipitaka/mn/mn.019.than.html
Misattributed

When Things Fall Apart: Heart Advice for Difficult Times (1997)

Source: Shōgun

Fearlessness
One Minute Wisdom (1989)