He who chooses the beginning of the road chooses the place it leads to.

It is a wise man that does know the contented man is never poor, whilst the discontented man is never rich.

The greatest deception men suffer is from their own opinions.

The ultimate authority must always rest with the individual's own reason and critical analysis.

Science has not yet taught us if madness is or is not the sublimity of the intelligence.

Think globally, act locally.

Take care of the pieces well. The whole will take care of itself.

Reality leaves a lot to the imagination.

Anger begins in folly, and ends in repentance.

Stubborn and ardent clinging to one's opinion is the best proof of stupidity.

Science is organized knowledge. Wisdom is organized life.

Whatever you think the world is withholding from you, you are withholding from the world.

Empty pockets never held anyone back. Only empty heads and empty hearts can do that.

Intellectuals solve problems, geniuses prevent them.

Don't raise your voice, improve your argument.

Wisdom... comes not from age, but from education and learning.

I hear and I forget. I see and I remember. I do and I understand.

Power always thinks it has a great soul and vast views beyond the comprehension of the weak.

Do not deny the classical approach, simply as a reaction, or you will have created another pattern and trapped yourself there.

In moments of great grief, that’s where you look and immerse yourself. You realise you are not immortal, you are not a god, you are part of the natural world and you come to accept that.

A single lie destroys a whole reputation of integrity.