If anyone went on for a thousand years asking of life: 'Why are you living?' life, if it could answer, would only say, 'I live so that I may live.' That is because life lives out of its own ground and springs from its own source, and so it lives without asking why it is itself living.

Meister Eckhart (CWS) (ed. Paulist Press, 1981) - ISBN: 9780809123704