Tomorrow is nothing, today is too late; the good lived yesterday.

Frightened of change? But what can exist without it? What's closer to nature's heart? Can you take a hot bath and leave the firewood as it was? Eat food without transforming it? Can any vital process take place without something being changed? Can't you see? It's just the same with you - and just as vital to nature.

Ambition means tying your well-being to what other people say or do. Self-indulgence means tying it to the things that happen to you. Sanity means tying it to your own actions.

He who pays no attention to what his neighbor does, says or thinks, preferring to concentrate on making his own actions appropriate and justifiable, better uses his time.

Alexander the Great and his mule driver both died and the same thing happened to both.

From my grandfather's father, I learned to dispense with attendance at public schools, and to enjoy good teachers at home, and to recognize that on such things money should be eagerly spent.

Never let the future disturb you. You will meet it, if you have to, with the same weapons of reason which today arm you against the present.