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

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

Investigate, educate and organize.

A man who has never gone to school may steal a freight car; but if he has a university education, he may steal the whole railroad.

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

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.

Education is the ability to listen to almost anything without losing your temper or your self-confidence.

Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

Learning never exhausts the mind.

If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.

Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.

I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.

The only true wisdom is in knowing you know nothing.

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

Industrialize or perish.

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

Don't worry that children never listen to you; worry that they are always watching you.

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

Education is the kindling of a flame, not the filling of a vessel.

Real learning comes about when the competitive spirit has ceased.

Education is an ornament for the prosperous, a refuge for the unfortunate.