It is always advisable to perceive clearly our ignorance.

Nature is pleased with simplicity. And nature is no dummy

The greatest power we have is the power of choice.

The only real laughter comes from despair.

Doubt is the origin of wisdom

Attitude, not Aptitude, determines Altitude.

There are things known and there are things unknown, and in between are the doors of perception.

If we do not lay out ourselves in the service of mankind whom should we serve?

If you place your head in a lion's mouth, then you cannot complain one day if he happens to bite it off.

If you only read the books that everyone else is reading, you can only think what everyone else is thinking.

This is something basic to be understood: the ego must come to a peak, it must be strong, it must have attained an integrity only then can you dissolve it.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.

No one cares how much you know, until they know how much you care

Men build too many walls and not enough bridges.

If you are neutral in situations of injustice, you have chosen the side of the oppressor.

Jealousy is the tribute mediocrity pays to genius.

Moderation in temper is always a virtue; but moderation in principle is always a vice.

It's not a question of learning much.On the contrary.It's a question of UNLEARNING much.

It is neither good nor bad, but thinking makes it so.

Intelligence is a moral category.

Colorless green ideas sleep furiously