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Quotes about Morality

The act that anything evil puts forth is due to the strength of goodness, but a deficient goodness. For if there were nothing of good there, neither would there be any being, nor any action: again, if the goodness were not deficient, neither would there be any evil.
— St. Thomas Aquinas
On the contrary, Augustine says (Enchiridion 14) that "evil exists only in good.
— St. Thomas Aquinas
But there are more wicked men to be found than good; according to Eccles. 1:15: "The number of fools is infinite.
— St. Thomas Aquinas
God is not offended except by our acting contrary to our own good
— St. Thomas Aquinas
Three things are required for a war to be just. Indeed, the first requirement is that the ruler at whose command the war is to be waged have the lawful authority to do so. . . . Second, there needs to be a just cause to wage war, namely, that the enemy deserve to have war waged against it because of some wrong it has inflicted. . . . Third, those waging war need to have a right intention, namely, an intention to promote good and avoid evil.
— St. Thomas Aquinas
Hence it is predicated chiefly of the virtuous; then of the pleasant; and lastly of the useful.
— St. Thomas Aquinas
Good can exist without evil whereas evil cannot exist without good.
— St. Thomas Aquinas
To sin is to fall short of a perfect action; hence to be able to sin is to be able to fall short in action, which is repugnant to omnipotence.
— St. Thomas Aquinas
yet so that envy is not to be taken for a passion, but for a will resisting the good of another.
— St. Thomas Aquinas
It is necessary to the happiness of man that he be mentally faithful to himself. Infidelity does not consist in believing, or in disbelieving, it consists in professing to believe what he does not believe.
— Thomas Paine
There is an idea abroad among moral people that they should make their neighbors good. One person I have to make good: Myself. But my duty to my neighbor is much more nearly expressed by saying that I have to make him happy if I may.
— Robert Louis Stevenson
Whenever you define family as anything other than a man and a woman married together, you have just introduced an ethical nightmare.
— Tony Evans