The Christian test was a willingness to believe in the one Jesus Christ and His Message of salvation. What was demanded was not criticism but credulity. The Church Fathers observed that in the realm of thought only heresy had a history.

I have observed that the world has suffered far less from ignorance than from pretensions to knowledge. It is not skeptics or explorers but fanatics and ideologues who menace decency and progress. No agnostic ever burned anyone at the stake or tortured a pagan, a heretic, or an unbeliever.

Celebrity-worship and hero-worship should not be confused. Yet we confuse them every day, and by doing so we come dangerously close to depriving ourselves of all real models. We lose sight of the men and women who do not simply seem great because they are famous but are famous because they are great. We come closer and closer to degrading all fame into notoriety.

The most promising words ever written on the maps of human knowledge are terra incognita, unknown territory.

The great obstacle to discovering the shape of the earth, the continents, and the oceans was not ignorance, but the illusion of knowledge.

A sign of celebrity is that his name is often worth more than his services.

The hero was a big man; the celebrity is a big name.