Virtue is an angel, but she is a blind one, and must ask Knowledge to show her the pathway that leads to her goal. – Horace Mann, "Thoughts for a Young Man," 1859

Seek virtue rather than riches. You may be sure to acquire the first; but cannot promise for the latter. No one can rob you of the first without your consent; you may be deprived of the latter a hundred ways. – James Burgh, The Dignity of Human Nature: Book III. Of Virtue, 1754

The greatest virtues are those which are most useful to other persons. – Aristotle

Sin is commitable in thought, word or deed; so is virtue. – Martin H. Fischer (1879–1962)