The significant problems we face cannot be solved at the same level of thinking we were at when we created them. (Albert Einstein)

The fundamental cause of trouble in the world is that the stupid are cocksure while the intelligent are full of doubt. (Bertrand Russell)

I can write better than anybody who can write faster, and I can write faster than anybody who can write better. (A. J. Liebling)

The true measure of a man is how he treats someone who can do him absolutely no good. (Samuel Johnson)