"All the interests of my reason, speculative as well as practical, combine in the three following questions: 1. What can I know? 2. What ought I to do? 3. What may I hope?"

"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. "

"It is not God's will merely that we should be happy, but that we should make ourselves happy. "

"Thoughts without content are empty, intuitions without concepts are blind. "

"Two things awe me most, the starry sky above me and the moral law within me. "

"To be is to do."


"It is difficult for the isolated individual to work himself out of the immaturity which has become almost natural for him."

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

" The idea of a pure world of understanding, and to which we ourselves as rational beings belong, is a useful idea."

"The death of dogma is the birth of reality."

"Every man is to be respected as an absolute end in himself: and it is a crime against the dignity that belongs to him as a human being, to use him as a mere means for some external purpose."

"Have patience awhile; slanders are not long-lived. Truth is the child of time; erelong she shall appear to vindicate thee."