“We can't have moral obligations to every single person in this world. We have moral obligations to those who we come up against, who enter into our moral space, so to speak. That means neighbors, people we deal with, and so on.”

“We are on strike against martyrdom—and against the moral code that demands it. We are on strike against those who believe that one man must exist for the sake of another. We are on strike against the morality of cannibals, be it practiced in body or in spirit. We will not deal with men on any terms but ours—and our terms are a moral code which holds that man is an end in himself and not the means to any end of others.”

“We have a social responsibility, a constitutional opportunity and a moral obligation to help others.”

“Being vegan is not a matter of "lifestyle." It is a matter of fundamental moral obligation. Is being vegan a matter of "choice"? Only insofar as we are able to choose to ignore our moral obligations not to exploit the vulnerable.”

“I believe we have a deficit of moral courage in the United States Congress. We have many learned individuals who know what is right but have not the courage to stand against the moral corruption that is now attempting to undermine our republic.”

“Nature consists of facts and of regularities, and is in itself neither moral nor immoral. It is we who impose our standards upon nature, and who in this way introduce morals into the natural world, in spite the fact that we are part of this world. We are products of nature, but nature has made us together with our power of altering the world, of foreseeing and of planning for the future, and of making far-reaching decisions for which we are morally responsible. Yet, responsibility, decisions, enter the world of nature only with us”