It is easy to understand that in the dreary middle ages the Aristotelian logic would be very acceptable to the controversial spirit of the schoolmen, which, in the absence of all real knowledge, spent its energy upon mere formulas and words, and that it would be eagerly adopted even in its mutilated Arabian form, and presently established as the centre of all knowledge.

The position of an art in the scale of human knowledge is, perhaps, the most eloquent symptom of the gulf between man's progress in the physical sciences and his stagnation (or, today, his retrogression) in the humanities.

Why were you happier when you were a kid? Because you didn't know anything. The more you know, the sadder you get.

The low esteem in which science and scientists are held is having serious consequences. We live in a society that is increasingly governed by science and technology, yet fewer and fewer young people want to go into science.

Hunger is a lesser evil than ignorance.

Knowledge is the eldest daughter of wisdom.

Ignorance is your opponent, fear is your enemy, vice is your adversary, virtue is your friend, and wisdom is your helper.

The man who asks a question is a fool for a minute, the man who does not ask is a fool for life.

Everyone has two choices. We're either full of love... or full of fear.

We must fear God out of love, not love Him out of fear.

We are not to give credit to the many, who say that none ought to be educated but the free but rather to the philosophers, who say that the well-educated alone are free.

They believed that in watching these burnings and dissections, they had an actual window into hell itself.