Nobody has a right to speak more clearly than he thinks.

The many become one and are increased by one.

Without adventure all civilization is full of decay. Adventure rarely reaches its predetermined end. Columbus never reached China.

When you're average, you're just as close to the bottom as you are the top.

The progress of Science consists in observing interconnections and in showing with a patient ingenuity that the events of this ever-shifting world are but examples of a few general relations, called laws. To see what is general in what is particular, and what is permanent in what is transitory, is the aim of scientific thought.

Imagination is not to be divorced from the facts. It is a way of illuminating the facts.

But you can catch yourself entertaining habitually certain ideas and setting others aside; and that, I think, is where our personal destinies are largely decided.