All of us learn to write in the second grade. Most of us go on to greater things.
This world is a comedy for those who think and a tragedy for those who feel.
As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.
There is something fascinating about science. One gets such wholesale returns of conjecture out of such a trifling investment of fact.
Horse sense is the thing a horse has which keeps it from betting on people.
But in our enthusiasm, we could not resist a radical overhaul of the system, in which all of its major weaknesses have been exposed, analyzed, and replaced with new weaknesses.
Imagination is the one weapon in the war against reality.
Chess is a foolish expedient for making idle people believe they are doing something very clever when they are only wasting their time.