Nan-in, a Japanese master during the Meiji era (1868-1912), received a university professor who came to inquire about Zen. Nan-in served tea. He poured his visitor's cup full, and then kept on pouring. The professor watched the overflow until he no longer could restrain himself. "It is overfull.
Ever since I was a child, I have been acutely sensitive to the idea - in the way that other people seem to feel only after bereavement or some shocking unexpected event - that the human intellect is unable, finally, to make sense of the world: everything is contradiction and paradox, and no one really knows much for sure, however loudly they profess to the contrary.
What does love mean, exactly? We have applied to it our finest definitions; we have examined its psychology and outlined it in philosophical frameworks; we have even devised a mathematical formula for attaining it. And yet anyone who has ever taken this wholehearted leap of faith knows that love remains a mystery - perhaps the mystery of the human experience.