"Y'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 on 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 on to something else. But I don't have to know an answer. 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."