Wisdom

Not to unlearn what you have learned is the most necessary kind of learning.

The scientist is a lover of truth for the very love of truth itself, wherever it may lead

The wise person often shuns society for fear of being bored.

I resolved to stop accumulating and begin the infinitely more serious and difficult task of wise distribution

All noble enthusiasms pass through a feverish stage, and grow wiser and more serene

Men are never very wise and select in the exercise of a new power

There are periods when to dare, is the highest wisdom

The chief object of education is not to learn things but to unlearn things

The only fence against the world is a thorough knowledge of it

I have studied many philosophers and many cats. The wisdom of the cats is infinitely superior.

Knowledge is like a baobab tree - one person's arms are not enough to encompass it

Do you think yourself wise? Then there's a donkey inside your waistcoat

Authority without wisdom is like a heavy axe without an edge, fitter to bruise than polish

Do not attempt too much at once.

Mortals' unwisdom is the worst of all.

Knowledge is the treasure, but judgment the treasurer, of a wise man.

Thought constitutes the greatness of man.

A great empire and little minds go ill together.

How is it possible to expect that mankind will take advice, when they will not so much as take warning?

A really great man has always an idea of something greater than himself.