Remorse - Regret that one waited so long to do it.

To argue that the gaps in knowledge which confront the seeker must be filled, not by patient inquiry, but by intuition or revelation, is simply to give ignorance a gratuitous and preposterous dignity.

It is Hell, of course, that makes priests powerful, not Heaven, for after thousands of years of so-called civilization fear remains the one common denominator of mankind

Pedagogues: More than any other class of blind leaders of the blind they are responsible for the degrading standardization which now afflicts the American people.

A man who knows a subject thoroughly, a man so soaked in it that he eats it, sleeps it and dreams it- this man can always teach it with success, no matter how little he knows of technical pedagogy.

The most common of all follies is to believe in the palpably untrue.

Skin diseases are something doctors like, the patient neither dies nor gets well.