The man who barely abstains from violating either the person or the estate or the reputation of his neighbours, has surely very little positive merit.
Mercy to the guilty is cruelty to the innocent.
The highest possible stage in moral culture is when we recognize that we ought to control our thoughts.
Whoever fights monsters should see to it that in the process he does not become a monster.
Happiness and moral duty are inseparably connected.
Two things fill the mind with ever new and increasing admiration and awe: the starry heavens above me and the moral law within me.
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.
Act only according to that maxim whereby you can at the same time will that it should become a universal law.
The time is always right to do what is right.
It is not desirable to cultivate a respect for the law, so much as for the right.
The physicists have known sin; and this is a knowledge which they cannot lose.
Three things are necessary for the salvation of man: to know what he ought to believe, to know what he ought to desire, and to know what he ought to do.
We love the idea that all actions have consequences.
Morality represents the way that people would like the world to work, whereas economics represents how it actually does work.
Let us try to teach generosity and altruism, because we are born selfish.
To see what is right and not do it is the worst cowardice.
