Never memorize something that you can look up.

When I have one week to solve a seemingly impossible problem, I spend six days defining the problem. Then, the solution becomes obvious.

The most difficult part about understanding something is that we understand it all.

Men marry women with the hope they will never change. Women marry men with the hope they will change. Invariably they are both disappointed.

Time is an illusion.

Experience is knowledge. All the rest is information.

Time is relative; its only worth depends upon what we do as it is passing.