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

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

When I am attacked by gloomy thoughts, nothing helps me so much as running to my books. They quickly absorb me and banish the clouds from my mind.

If help and salvation are to come, they can only come from the children, for the children are the makers of men.

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

When you know better you do better.

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

Science is a way of thinking much more than it is a body of knowledge.

To every action there is always an equal and opposite or contrary, reaction

The real solution lies in a world in which charity will have become unnecessary.

I am a part of everything that I have read.

Seek knowledge from the cradle to the grave.

Free the child's potential, and you will transform him into the world.

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.

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

Dare to think for yourself.

To read is to fly: it is to soar to a point of vantage which gives a view over wide terrains of history, human variety, ideas, shared experience and the fruits of many inquiries.

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

As we acquire more knowledge, things do not become more comprehensible but more mysterious.

Common sense is the collection of prejudices acquired by age eighteen.

Study without desire spoils the memory, and it retains nothing that it takes in.