Men become wise just as they become rich, more by what they save than by what they receive.

There's no sense in being precise when you don't even know what you're talking about.

No one can make you feel inferior without your consent.

There are no limitations to the mind except those we acknowledge.

Boredom is the root of all evil - the despairing refusal to be oneself.

You are not a drop in the ocean. You are the entire ocean, in a drop.

Chaos is a name for any order that produces confusion in our minds.

Circumstances do not make a man, they reveal him.

Learning and wisdom are superfluities, the surface glitter merely, but it is the heart that is the seat of all power.

Forget not that the earth delights to feel your bare feet and the winds long to play with your hair.

The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.

Although our intellect always longs for clarity and certainty, our nature often finds uncertainty fascinating.

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

What's real and what's true aren't necessarily the same.

Jealousy is the tribute mediocrity pays to genius.

It is not the strength, but the duration, of great sentiments that makes great men.

Reality leaves a lot to the imagination.

Think globally, act locally.

Experience teaches us that it is much easier to prevent an enemy from posting themselves than it is to dislodge them after they have got possession.

There are no eternal facts, as there are no absolute truths.

An understanding of the natural world is a source of not only great curiosity, but great fulfilment.