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

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

We must not overlook the role that extremists play. They are the gadflies that keep society from being too complacent.

You have had your last bad meal. But, you have also heard your last honest compliment, and you have lost your last true friend.

We must not overlook the role that extremists play. They are the gadflies that keep society from being too complacent or self-satisfied; they are, if sound, the spearhead of progress. If they are fundamentally wrong, free discussion will in time put an end to them.

Medical education is not just a program for building knowledge and skills in its recipients... it is also an experience which creates attitudes and expectations.

A patient had a 50-50 chance of benefiting from visiting a physician as of 1910. Medicine was more like voodoo than science until the 20th Century.