"Act only according to that maxim whereby you can, at the same time, will that it should become a universal law."
"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."
"Always recognize that human individuals are ends, and do not use them as mere means to your ends."
"Morality is not properly the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness."
"Freedom is the precondition for any moral act."
"The moral law within me is a wonder that fills my mind with awe."
"It is not God’s will merely that we should be happy, but that we should make ourselves worthy of happiness."