If one cannot enjoy reading a book over and over again, there is no use in reading it at all.

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

Courage, conviction and confidence.

All stable processes we shall predict. All unstable processes we shall control.

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

Science is not only a disciple of reason but, also, one of romance and passion.

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.

It is better to know how to learn than to know.

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

When you know better you do better.

One test of the correctness of educational procedure is the happiness of the child.

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

Knowledge, Action, Devotion are complementary to each other.

The progressive development of man is vitally dependent on invention.

The first idea the child must acquire is that of the difference between good and evil.

I am a part of everything that I have read.

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

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

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

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

Education is the most powerful weapon which you can use to change the world.