The only good is knowledge and the only evil is ignorance.

Science is a rising force, It is creating a new world about us. It needs to be watched and pressed into service, and in any case, it would be courting disaster to ignore it.

Science is what we have learned about how to keep from fooling ourselves.

Don't learn to do, but learn in doing.

The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.

An investment in knowledge pays the best interest.

Know what you are talking about.

Courage, conviction and confidence.

You can never learn less, you can only learn more.

Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.

Education is our passport to the future, for tomorrow belongs to the people who prepare for it today.

A witty saying proves nothing.

If there were no bad people, there would be no good lawyers.

You can never be overdressed or overeducated.

Evil being the root of mystery, pain is the root of knowledge.

I am a part of everything that I have read.

The knowledge of all things is possible

Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.

The secret of life is not enjoyment but education through experience.

Opinion is the medium between knowledge and ignorance.

Knowing others is wisdom, knowing yourself is Enlightenment.