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

Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.

Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.

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

Knowledge, Action, Devotion are complementary to each other.

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

Books are as useful to a stupid person as a mirror is useful to a blind person.

I do not know how to teach philosophy without becoming a disturber of the peace.

Courage, conviction and confidence.

Make it a rule never to give a child a book you would not read yourself.

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

The first principle is that you must not fool yourself and you are the easiest person to fool.

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

My weapon is literature

Learning never exhausts the mind.

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

Never help a child with a task at which he feels he can succeed.

In mathematics you don't understand things. You just get used to them.

The man who is fond of books is usually a man of lofty thought, and elevated opinions.

When you know better you do better.

The highest activity a human being can attain is learning for understanding, because to understand is to be free.