It is a proof of our natural bias to evil, that gain is slower and harder than loss in all things good; but in all things bad getting is quicker and easier than getting rid of.
By competent evidence, is meant such as the nature of the thing to be proved requires; and by satisfactory evidence, is meant that amount of proof, which ordinarily satisfies an unprejudiced mind, beyond any reasonable doubt.
The proof that God has revealed himself to man by special and express communications, and that Christianity constitutes that revelation, is no part of these inquiries.
It would be very discouraging if somewhere down the line you could ask a computer if the Riemann hypothesis is correct and it said, 'Yes, it is true, but you won't be able to understand the proof.'
I mean the word proof not in the sense of the lawyers, who set two half proofs equal to a whole one, but in the sense of a mathematician, where half proof = 0, and it is demanded for proof that every doubt becomes impossible.
When I was fired from my post as General of the Fighter Arm, I was to give proof that this jet was a superior fighter. And that's when we did it. I think we did it.