“We can never, even by the strictest examination, get completely behind the secret springs of action.”

If the truth shall kill them, let them die.

Experience may teach us what is, but never that it cannot be otherwise.

It is beyond a doubt that all our knowledge begins with experience.

Man must be disciplined, for he is by nature raw and wild.

Treat people as an end, and never as a means to an end.

Experience without theory is blind, but theory without experience is mere intellectual play.

What might be said of things in themselves, separated from all relationship to our senses, remains for us absolutely unknown.

We are enriched not by what we possess, but by what we can do without.

For peace to reign on Earth, humans must evolve into new beings who have learned to see the whole first.

Freedom is the opposite of necessity.

Without man and his potential for moral progress, the whole of reality would be a mere wilderness, a thing in vain, and have no final purpose.

Give me matter and I will build a world out of it.

The possession of power inevitably spoils the free use of reason.

Enlightenment is man’s emergence from his self-incurred immaturity.

Heaven has given human beings three things to balance the odds of life: hope, sleep, and laughter.

Thoughts without content are empty, intuitions without concepts are blind.

We are most alive when we are loving and actively giving ourselves because we were made to do these things.

We should round every day of stirring action with an evening of thought. We learn nothing of our experience except we muse upon it.

I may not practice what I preach but God forbid I should preach what I practice

Deliberation is the work of many men. Action, of one alone.

A decision, an action, are infallible omens of what we shall do another time, not for any vague, mystic, astrological reason but because they result from an automatic reaction that will repeat itself.

The words I speak, the things I do, let them be only, all for you.

I am made of sunsets. I am always changing, sometimes breathtaking, and sometimes too tired to put on a show.

It is not that things happen to each of us according to his fate, but that he interprets what has happened, if he has power to do so, according to his sense of his own destiny.