that we should look to see what's true, and what may be, may not be true; once you start doubting, which I think to me is a very fundamental part of my soul - is to doubt, and to ask - and when you doubt and ask it gets a little harder, to believe. You see, one thing is, I can live with doubt, and uncertainty, and not knowing. I think it's much more interesting to live not knowing than to have answers which might be wrong. I have approximate answers, and possible beliefs, and different degrees of certainty about different things, but I'm not absolutely sure of anything and many things I don't know anything about, such as whether it means anything to ask why we're here and what the question might mean. I might think about it a little bit; if I can't figure it out then I go to something else. But I don't have to know an answer. I don't have, I don't have - I don't feel frightened by not knowing things, by being lost in the mysterious universe without having any purpose - which is the way it really is as far as I can tell, possibly - it doesn't frighten me.

~ Richard Feynman