“The cultivation of reason leads humanity sooner to misery than happiness.”

The main point of enlightenment is man’s release from his self-caused immaturity, primarily in matters of religion.

If justice perishes, then it is no longer worthwhile for men to live upon the earth.

From such crooked timber as humanity is made of, no straight thing was ever constructed.

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

I have therefore found it necessary to deny knowledge, in order to make room for faith.

You must, therefore you can. A free will and a will subject to moral laws are one and the same thing.

All human cognition begins with intuitions, proceeds from thence to conceptions, and ends with ideas.

All so-called moral interest consists simply in respect for the law.

War seems to be ingrained in human nature, and even to be regarded as something noble to which man is inspired by his love of honor, without selfish motives.

Human beings are never to be treated as a means but always as ends.

It is certainly a bad sign of common sense to appeal to it as a witness.

To be is to do.

But only he who, himself enlightened, is not afraid of shadows.

Rules for happiness: something to do, someone to love, something to hope for.

Things which as effects presuppose others as causes cannot be reciprocally at the same time causes of these.

Freedom, is a property of all rational beings.

Happiness is not the absence of problems; it’s the ability to deal with them.

Do not let either the medical authorities or the politicians mislead you. Find out what the facts are, and make your own decisions about how to live a happy life and how to work for a better world.

Watch your manner of speech if you wish to develop a peaceful state of mind. Start each day by affirming peaceful, contented and happy attitudes and your days will tend to be pleasant and successful.

People are chasing cash, not happiness. When you chase money, you’re going to lose. You’re just going to. Even if you get the money, you’re not going to be happy.

Optimists are happier in life for a reason.

Repetition not for monotony but the ecstasy it induces.

I’m happy in Madrid, my kids are happy and my wife is happy, so everything’s good. If anyone knows about contracts they take a while to sort out.

If you’re not happy single, your not gonna be happy married.