Kant, Immanuel

"Nature is not man's mother; it is his teacher."

"Patience is a virtue."

"The human being is an end in himself, not a means to some other end."

"We are not rich by what we possess but by what we can do without."

"A lie is a violation of the moral law."

"Work is the only thing that makes life endurable."

"The more a man cultivates his reason, the more unhappy he becomes."

"Man has always had the conceit that he was created for some great purpose."

"Freedom and necessity are compatible."

"Beauty is the expression of the nature of an object in a language suited to our perception."

"I respect the religion of Jesus, but I cannot accept the theology of Christianity."

"The misanthropist is he who has spent all his money on humanity."

"A man is as good as his word."

"Duty is the necessity of acting from respect for the law."

"Men may be outwardly quiet and peaceable, but within they are nevertheless in a state of war."

"Morality is not the doctrine of how we may make ourselves happy but how we may make ourselves worthy of happiness."

"The beauty of a thing is not in the thing itself but in the eye of the beholder."

"Genius is the ability to act in accordance with the laws of beauty."

"In the practical philosophy of Kant, the supreme good is moral perfection."

"The highest vocation of man is to promote the happiness of others."

"Enthusiasm is a phenomenon of the senses."

"The love of mankind is a duty."

"Patience is a bitter plant but it has sweet fruit."

"A man may know the world without ever leaving his house."

"The world is not as it should be, but as men make it."

"History is a process of development toward freedom."

"The progress of humanity is the triumph of reason over passion."

"Beauty is the only proof that the world is not governed by the laws of physics."

"Time is not a thing in itself but an a priori condition of human experience."

"The greatest good for the greatest number is not necessarily the highest good."