Myers on meaning

At the end of a post about convergent evolution (and its misinterpretations), P.Z. Myers, author of the Pharyngula blog, gives these thoughts about meaning and purpose:

We are each our own individual engines of purpose, operating in a hostile universe where randomness can shape our fates. There is no grand scheme behind our existence, other than the same function that all our ancestors had: to order our local environment to allow each to survive and to make the world a little better for our progeny. And that's enough — that's all that is needed to make a rich, diverse, living planet, and it's all I need to live a satisfying life.

What a heartfelt summary of meaning in a naturalistic worldview. Thankyou, P.Z.!