Imagination is more valuable than information.

The formulation of the problem is often more essential than its solution, which may be merely a matter of mathematical or experimental skill.

Everything that is really great and inspiring is created by the individual who can labor in freedom.

In the teaching of geography and history a sympathetic understanding (should) be fostered for the characteristics of the different peoples of the world, especially for those who we are in the habit of describing as "primitive.

If I had an hour to solve a problem and my life depended on the solution, I would spend the first 55 minutes determining the proper question to ask, for once I know the proper question, I could solve the problem in less than five minutes.

Once you stop learning, you start dying

Have the courage to take your own thoughts seriously, for they will shape you.