Norman Fischer has an article in Shambhala Sun called "Phrases and Spaces."
I take one paragraph from a fascinating article on Zen Koans. Koans work on us, rather than us on them.
"To be willing to enter into the silence that surrounds and pervades all phrases (those made of words and not made of words) is to be willing to die - to die to knowledge, control, desire. To know and embrace death, is to be willing to die to every moment - that is what it takes to actually live. This is why people want to go rock climbing or jump out of airplanes, or go to war. In spiritual practice, we are trying to live with full passion without doing all these risky things. Being alive is risky enough, and also completely safe."