In physics, all can you do is predict the consequences of physical laws.
— Leonard Mlodinow
A failure doesn't mean you are unworthy, nor does it preclude success on the next try.
I believe in a kind of God. I think all scientists, in a way, believe in a certain God, in a certain order of nature.
I believe there is true expertise in some endeavors, and not in others. There is obviously no such thing as expertise in predicting the results of coin tosses, but there is expertise in predicting the behavior of lasers.