There are men who teach best by not teaching at all.

The real enemy is the man who tries to mold the human spirit so that it will not dare to spread its wings.

The new naval treaty permits the United States to spend a billion dollars on warships-a sum greater than has been accumulated by all our endowed institutions of learning in their entire history. Unintelligence could go no further! ... In Great Britain, the situation is similar. ... Until the figures are reversed, ... nations deceive themselves as to what they care about most.

The world in which we live is the only world about which our senses can testify.

There are men who teach best by not teaching at all.

Science, in the very act of solving problems, creates more of them.

The student is to collect and evaluate facts. The facts are locked up in the patient.