“Morality is not properly the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness.”

How then is perfection to be sought? Wherein lies our hope? In education, and in nothing else.

By a lie a man throws away, and as it were, annihilates his dignity as a man.

The hand is the visible part of the brain.

Have the courage to use your own reason- That is the motto of enlightenment.

What can I know? What ought I to do? What can I hope?

Dignity is a value that creates irreplaceability.

Give me matter, and I will construct a world out of it!

Enlightenment is man’s emergence from his self-imposed immaturity. Immaturity is the inability to use one’s understanding without guidance from another.

The history of nature, begins with good, for it is God’s work; the history of freedom begins with badness, for it is man’s work.

Nothing is divine but what is agreeable to reason.

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.