You are the bows from which your children as living arrows are sent forth.

The difference between stupidity and genius is that genius has its limits.

Intelligence is a moral category.

The experience gathered from books, though often valuable,is but the nature of learning whereas the experience gained from actual life is of the nature of wisdom.

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

Everything excellent is as difficult as it is rare.

Above all be of single aim; have a legitimate and useful purpose, and devote yourself unreservedly to it.

Unfortunately, the clock is ticking, the hours are going by. The past increases, the future recedes. Possibilities decreasing, regrets mounting.

A good teacher protects his pupils from his own influence.

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

The greatest pride, or the greatest despondency, is the greatest ignorance of one's self.

In a good bookroom you feel in some mysterious way that you are absorbing the wisdom contained in all the books through your skin, without even opening them.

Tomorrow hopes we have learned something from yesterday.

Instinct is a marvellous thing. It can neither be explained nor ignored.

Those who see the invisible can do the impossible.

It is always advisable to perceive clearly our ignorance.

A crust eaten in peace is better than a banquet partaken in anxiety.

If you buy what you do not need, you will need what you cannot buy.

It is easy to be brave at a safe distance.

If you have no problems, then you have no clue to what is going.

He who can destroy a thing, can control a thing.