We have in fact, two kinds of morality, side by side: one which we preach, but do not practice, and another which we practice, but seldom preach.

Having knowledge of an unethical act and allowing it to continue can spread a contagion that can affect multiple beings in society

So long as there is death there will be sorrow, and so long as there is sorrow it can be no part of the duty of human beings to increase its amount, in spite of the fact that a few rare spirits know how to transmute it.

Science, by itself cannot, supply us with an ethic.