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

It is not enough for the teacher to love the child. She must first love and understand the universe. She must prepare herself, and truly work at it.

Human behavior flows from three main sources: desire, emotion, and knowledge

We could never learn to be brave and patient, if there were only joy in the world

Courage, conviction and confidence.

I think that kids have a greater capacity for processing things than we give them credit for.

The only true wisdom is in knowing you know nothing.

Know what you are talking about.

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

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

Any sufficiently advanced technology is indistinguishable from magic.

Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

If you're teaching today what you were teaching five years ago, either the field is dead or you are.

The task of a writer is not to solve the problem but to state the problem correctly.

A child educated only at school is an uneducated child.

They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.

All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.

It is beyond a doubt that all our knowledge begins with experience.

The most important part of teaching is to teach what it is to know.

What is freedom of expression? Without the freedom to offend, it ceases to exist.

An investment in knowledge pays the best interest.