I love this quote from 20th Century theoretical physicist Richard Feynman, and I’m glad that he was content to live with doubt and uncertainly.

I wouldn’t be surprised if the human intellect eventually hits a wall when it comes to understanding things like the ultimate components of the universe, what happened before the Big Bang, and what comprises human consciousness.  All evidence points to the fact that we were evolved from hunter gatherers, whose brains were developed to find food and water, to protect themselves from predators, etc.  Now we’re asking these brains to deal with issues like dark energy?

Uncertainty May Be a Permanent Condition