The supreme goal of all theory is to make the irreducible basic elements as simple and as few as possible without having to surrender the adequate representation of a simple datum of experience.

Solitude is painful when one is young, but delightful when one is more mature.

I have always loved solitude, a trait which tends to increase with age.

The most important decision we make is whether we believe we live in a friendly or hostile universe.

The health of society thus depends quite as much on the independence of the individuals composing it as on their close political cohesion.

The great moral teachers of humanity were in a way artistic geniuses in the art of living.

How many people are trapped in their everyday habits: part numb, part frightened, part indifferent? To have a better life we must keep choosing how we are living.