“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, but 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 have to… 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.”

Phillip Richard Feynman