Younger scientists are extremely sensitive to the moral implications of all they do.

If a work of art is rich and vital and complete, those who have artistic instincts will see its beauty, and those to whom ethics appeal more strongly than aesthetics will see its moral lesson. It will fill the cowardly with terror, and the unclean will see in it their own shame.

It is right to give every man his due.

The only objects of practical reason are therefore those of good and evil. For by the former is meant an object necessarily desired according to a principle of reason; by the latter one necessarily shunned, also according to a principle of reason.

To prefer evil to good is not in human nature; and when a man is compelled to choose one of two evils, no one will choose the greater when he might have the less.

I do not know how to teach philosophy without becoming a disturber of established religion.

Mankind is not likely to salvage civilization unless he can evolve a system of good and evil which is independent of heaven and hell.

He who steals a little steals with the same wish as he who steals much, but with less power.

We all have the duty to do good.

Every man must decide whether he will walk in the light of creative altruism or in the darkness of destructive selfishness.

Doing well is the result of doing good. That’s what capitalism is all about.

Faced with what is right, to leave it undone shows a lack of courage.

Let’s pray that the human race never escapes from Earth to spread its iniquity elsewhere.

Virtue is not left to stand alone. He who practices it will have neighbors.

Religion is what keeps the poor from murdering the rich.

When you have to kill a man, it costs nothing to be polite.

Virtue cannot separate itself from reality without becoming a principle of evil.

We might come closer to balancing the Budget if all of us lived closer to the Commandments and the Golden Rule.

An act has no ethical quality whatever unless it be chosen out of several all equally possible.

Shame may restrain what law does not prohibit.

Charity creates a multitude of sins.

Truth is certainly a branch of morality and a very important one to society.

If co-operation is a duty, I hold that non-co-operation also under certain conditions is equally a duty.

You cannot be in a position of power and destroy the life of another person.

Morality is the theory that every human act must be either right or wrong, and that 99 % of them are wrong.

Principles are guidelines for human conduct that are proven to have enduring, permanent value.

Blessedness is not the reward of virtue but virtue itself.

Ethics is nothing else than reverence for life.

A man is truly ethical only when he obeys the compulsion to help all life which he is able to assist, and shrinks from injuring anything that lives.

I love to go to the zoo. But not on Sunday. I don’t like to see the people making fun of the animals, when it should be the other way around.

Ethics is in origin the art of recommending to others the sacrifices required for cooperation with oneself.

A return to first principles in a republic is sometimes caused by the simple virtues of one man. His good example has such an influence that the good men strive to imitate him, and the wicked are ashamed to lead a life so contrary to his example.

Always recognize that human individuals are ends, and do not use them as means to your end.

War is evil, but it is often the lesser evil.

Because of lack of moral principle, human life becomes worthless. Moral principle, truthfulness, is a key factor. If we lose that, then there is no future.

What is moral is what you feel good after, and what is immoral is what you feel bad after.

Violence is both unavoidable and unjustifiable.

Ethics is the activity of man directed to secure the inner perfection of his own personality.

Justice is truth in action.

What the statesman is most anxious to produce is a certain moral character in his fellow citizens, namely a disposition to virtue and the performance of virtuous actions.

No man is justified in doing evil on the ground of expedience.

Truly, I would not hang a dog by my will, much more a man who hath any honesty in him.

Honor is simply the morality of superior men.

It is not living that matters, but living rightly.

Great ambition is the passion of a great character. Those endowed with it may perform very good or very bad acts. All depends on the principles which direct them.

Laws control the lesser man… Right conduct controls the greater one.

Modesty forbids what the law does not.

Some like to think that a keen appreciation of art can actually make us better people – more just, more moral, more sensitive, more understanding. Perhaps that is true – in certain rare, isolated cases.

One must not cheat anyone, not even the world of its victory.

In the game of cricket, a hero is a person who respects the game and does not corrupt the game. The one who doesn’t or corrupts the game, they are the villain. They should be punished, and they have been punished in the past.

In matters of conscience, the law of the majority has no place.

Let me give you a definition of ethics: It is good to maintain and further life it is bad to damage and destroy life.

An actor is supposed to be a sensitive instrument. Isaac Stern takes good care of his violin. What if everybody jumped on his violin?

We’ve become, now, an oligarchy instead of a democracy. I think that’s been the worst damage to the basic moral and ethical standards to the American political system that I’ve ever seen in my life.

A President’s hardest task is not to do what is right, but to know what is right.

But the relationship of morality and power is a very subtle one. Because ultimately power without morality is no longer power.

I know of only one duty, and that is to love.

Each of us has a vision of good and of evil. We have to encourage people to move towards what they think is good… Everyone has his own idea of good and evil and must choose to follow the good and fight evil as he conceives them. That would be enough to make the world a better place.

Morality is the basis of things and truth is the substance of all morality.

May be is very well, but Must is the master. It is my duty to show justice without recompense.

No obligation to do the impossible is binding.