Cicero: “He ought to have broken his vow rather than commit so horrible a crime.”

It is, therefore, an excellent rule that they give who bid us not to do a thing, when there is a doubt whether it be right or wrong; for righteousness shines with a brilliance of its own, but doubt is a sign that we are thinking of a…

Moreover, all our thought and mental activity will be devoted either to planning for things that are morally right and that conduce to a good and happy life, or to the pursuits of science and learning.

There are, on the other hand, two kinds of injustice--the one, on the part of those who inflict wrong, the other on the part of those who, when they can, do not shield from wrong those upon whom it is being inflicted.

Again, there are certain duties that we owe even to those who have wronged us.