It is possible to fly without motors, but not without knowledge and skill.

Real knowledge is to know the extent of one's ignorance.

Knowledge becomes evil if the aim be not virtuous.

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

The direction in which education starts a man will determine his future in life

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

Patience is a virtue, and I'm learning patience. It's a tough lesson.

Physics is like sex: sure, it may give some practical results, but that's not why we do it.

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

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

A spirit of national masochism prevails, encouraged by an effete corps of impudent snobs who characterize themselves as intellectuals.

If I have seen further it is by standing on the shoulders of Giants.

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

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

The white man is very clever. He came quietly and peaceably with his religion. We were amused at his foolishness and allowed him to stay. Now he has won our brothers, and our clan can no longer act like one. He has put a knife on the things that held us together and we have fallen apart.

Knowledge, Action, Devotion are complementary to each other.

A little knowledge is a dangerous thing. So is a lot.

An investment in knowledge pays the best interest.

The secret of life is not enjoyment but education through experience.

I cannot teach anybody anything. I can only make them think

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