To see and listen to the wicked is already the beginning of wickedness.
Confucius
The word good has many meanings. For example, if a man were to shoot his grandmother at a range of five hundred yards, I should call him a good shot, but not necessarily a good man.
G.K. Chesterton
On the whole, human beings want to be good, but not too good and not quite all the time.
George Orwell
All cruelty springs from weakness.
Seneca
A good friend who points out mistakes and imperfections and rebukes evil is to be respected as if he reveals a secret of hidden treasure.
Buddha
It is impossible to live pleasurably without living prudently, honorably, and justly; or to live prudently, honorably, and justly, without living pleasurably.
Epicurus
Whenever you find a man who says he doesn't believe in a real right and wrong, you will find the same man going back on this a moment later.
C.S Lewis
Love all, trust a few, do wrong to none.
William Shakespeare
Men do not differ much about what things they will call evils; they differ enormously about what evils they will call excusable.
Be not overcome of evil, but overcome evil with good.
Bible
There is no kind of dishonesty into which otherwise good people more easily and frequently fall than that of defrauding the government.
Benjamin Franklin
There are some desires that are not desirable.
Men in no way approach so nearly to the gods as in doing good to men.
Cicero
Really great moral teachers never do introduce new moralities: it is quacks and cranks who do that.
Do not act as if you were going to live ten thousand years. Death hangs over you. While you live, while it is in your power, be good.
Marcus Aurelius
Laws without morals are in vain.
When you betray somebody else, you also betray yourself.
Isaac Bashevis Singer
Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws.
Plato
The natural desire of good men is knowledge.
Leonardo da Vinci
It is not goodness to be better than the very worst.