I was thinking these past few days about whether people can change their behavior, their choices and actions, for the better. Can man consistently make choices for altruistic reasons? Certainly there are some individuals who do it, but do you think the progress of the human race is such that more and more people will do so? Can man learn to act for social good, rather than personal interest? Or does man act only out of selfishness and self-interest and must be limited to the damage they cause one another? Is man perfectible?