An idea that is developed and put into action is more important than an idea that exists only as an idea.

The effective thinker treats arrogance as the major sin of thinking.

A good listener is very nearly as attractive as a good talker. You cannot have a beautiful mind if you do not know how to listen.

Everyone has the right to doubt everything as often as he pleases and the duty to do it at least once. No way of looking at things is too sacred to be reconsidered. No way of doing things is beyond improvement.

When the story of these times gets written, we want it to say that we did all we could, and it was more than anyone could have imagined.

The weapons of the positive revolution are not bullets and bombs but simple human perceptions. Bullets and bombs may offer physical power but eventually will only work if they change perceptions and values. Why not go the direct route and work with perceptions and values?

(...) being right all the time acquires a huge importance in education, and there is this terror of being wrong. The ego is so tied to being right that later on in life you are reluctant to accept that you are ever wrong, because you are defending not the idea but your self-esteem. (...) this terror of being wrong means that people have enormous difficulties in changing ideas.