It is difficult for the isolated individual to work himself out of the immaturity which has become almost natural for him.
Immanuel KantWithout man and his potential for moral progress, the whole of reality would be a mere wilderness, a thing in vain, and have no final purpose.
Immanuel KantWhen a thoughtful human being has overcome incentives to vice and is aware of having done his bitter duty, he finds himself in a state that could be called happiness, a state of contentment and peace of mind in which virtue is its own reward.
Immanuel Kant