Out of the crooked timber of humanity, no straight thing was ever made.
Perpetual peace is only found in the graveyard.
Always recognize that human individuals are ends, and do not use them as means to your end.
Two things awe me most, the starry sky above me and the moral law within me.
We are not rich by what we possess but by what we can do without.
Live your life as though your every act were to become a universal law.
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.
Religion is the recognition of all our duties as divine commands.
It is not God's will merely that we should be happy, but that we should make ourselves happy.