It is not necessary that whilst I live I live happily; but it is necessary that so long as I live I should live honourably. Immanuel Kant
But although all our knowledge begins with experience, it does not follow that it arises from experience. Immanuel Kant
It is not God's will merely that we should be happy, but that we should make ourselves happy. Immanuel Kant
In law a man is guilty when he violates the rights of others. In ethics he is guilty if he only thinks of doing so. Immanuel Kant