Freedom of speech and freedom of action are meaningless without freedom to think. And there is no freedom of thought without doubt.

There is wisdom in the selection of wisdom.

Many studies have established the fact that there is a high correlation between vocabulary and intelligence and that the ability to increase one's vocabulary throughout life is a sure reflection of intellectual progress.

The civilized man has a moral obligation to be skeptical. . . . Any man who for one moment abandons or suspends the questioning spirit has for that moment betrayed humanity.

Legislators who are of even average intelligence stand out among their colleagues. . . . A cultured college president has become as much a rarity as a literate newspaper publisher. A financier interested in economics is as exceptional as a labor leader interested in the labor movement. For the most part our leaders are merely following out in front; they [only] marshal us in the way that we are going.

There is no necessary connection between the desire to lead and the ability to lead, and even less the ability to lead somewhere that will be to the advantage of the led.

The mere abhorrence of vice is not a virtue at all.