We usually can't know how, and we probably should not even ask, how our lives contribute to a better world.

Smith could not be expected to have anticipated the horrors that were to come. But even in his own time, he was a defender of certain state actions that he thought necessary in order to safeguard the good effects of commercial society (Smith did not speak of 'capitalism' and was acquainted only with an early undeveloped form of it). Among these state actions the chief was general public education.

We can make mistakes about what we ought to do, and these are not the same as making bad decisions about what to do.

People who enjoy the privileges of success must use these privileges to benefit those who do not have them. These privileges constitute a deep hole they need to climb out of if they are to prevent its being the case that the world would have been better off if they had never been born.

It is a cause of shame to any member of the human race to be a member of the same species some of whose members could vote for any candidate for president that has been offered by the Republican party. Such people seem to be motivated only by short-sighted greed, ignorance, fear and hatred.

It is sad to witness the persistence in our society of the racism and xenophobia that seems to be a permanent part of our political culture. It is shameful to see politicians exploiting these human weaknesses in order to gain political power. It is most depressing of all to contemplate a future in which politicians who do this will continue to have influence over people's lives.

Kant regards the universalizability test for maxims as focused on a very special sort of situation: one where the agent is tempted to make an exception to a recognized duty out of self-preference. The universalizability test is supposed help the agent to see, in a particular case of moral judgment, that self-preference is not a satisfactory reason for exempting yourself from a duty you recognize. Kant thinks, as a matter of human nature, that this situation arises often enough and that we need a canon of judgment to guard against it.