Better know nothing than half-know many things.

The direction in which education starts a man will determine his future in life

There is nothing more awful, insulting, and depressing than banality.

The fullness of knowledge only comes through the awareness of ignorance.

Many much-learned men have no intelligence.

If you can't explain it simply, you don't understand it well enough.

All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.

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

There is no authority who decides what is a good idea.

Knowing others is wisdom, knowing yourself is Enlightenment.

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

Knowing is not enough; we must apply. Willing is not enough; we must do.

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

My weapon is literature

Books are for people who wish they were somewhere else.

Any sufficiently advanced technology is indistinguishable from magic.

A witty saying proves nothing.

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

Language is courage: the ability to conceive a thought, to speak it, and by doing so to make it true.

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

It is possible to fly without motors, but not without knowledge and skill.