Good ideas are common - what's uncommon are people who'll work hard enough to bring them about.

Unless you move, the place where you are is the place where you will always be.

It can take a surprisingly long time to get from one part of my mind to another.

My computer must be broken: whenever I ask a wrong question, it gives a wrong answer.

Useful undertakings which require sustained attention and vigorous precision in order to succeed often end up by being abandoned, for, in America, as elsewhere…

Some people should just start ideas and other ones should carry them out.

Genius is the ability to put into effect what is in your mind.