...the fullest development of the highest powers of men can be achieved only in a world of peace.

The policy of repression of ideas cannot work and never has worked.

Nobody can read Freud without realizing that he was the scientific equivalent of another nuisance, George Bernard Shaw.

Education is a kind of continuing dialogue, and a dialogue assumes different points of view.

Education is not to reform students or amuse them or to make them expert technicians. It is to unsettle their minds, widen their horizons, inflame their intellects, teach them to think straight, if possible.

It must be remembered that the purpose of education is not to fill the minds of students with facts... it is to teach them to think.

Too few have the courage of my convictions.