Identity Quotes - page 15
So much of modern mathematical work is obviously on the border-line of logic, so much of modern logic is symbolic and formal, that the very close relationship of logic and mathematics has become obvious to every instructed student. The proof of their identity is, of course, a matter of detail: starting with premisses which would be universally admitted to belong to logic, and arriving by deduction at results which as obviously belong to mathematics, we find that there is no point at which a sharp line can be drawn, with logic to the left and mathematics to the right. If there are still those who do not admit the identity of logic and mathematics, we may challenge them to indicate at what point, in the successive definitions and deductions of Principia Mathematica, they consider that logic ends and mathematics begins. It will then be obvious that any answer must be quite arbitrary.
Bertrand Russell
One night, when all the thoughts were coming to me, the concept came to me that Superman could have a dual identity, and that in one of his identities he could be meek and mild, as I was, and wear glasses, the way I do. The heroine, who I figured would be some kind of girl reporter, would think he was some kind of worm; yet she would be crazy about this Superman character who could do all sorts of fabulous things. In fact, she was real wild about him, and a big inside joke was that the fellow she was crazy about was also the fellow whom she loathed.
Jerry Siegel