While cleaning the attic, I found my copy of Plato's 'Republic', Hackett Publishing Company: 1992, which I read some years ago.
Plato's Republic is a classic, and it has some classic quotes about the practice of justice and injustice:
"We can see most clearly that those who practice justice do it unwillingly and because they lack the power to do injustice, if in our thoughts we grant to a just and an unjust person the freedom to do whatever they like.
"(..) no one is just willingly. Through cowardice or old age or some other weakness, people do indeed object to injustice. But it's obvious that they do so only because they lack the power to do injustice, for the first of them to acquire it is the first to do as much injustice as he can." (p.41)
"No one believes justice to be a good when it is kept private, since, wherever either person thinks he can do injustice with impunity, he does it. Indeed, every man believes that injustice is far more profitable to himself than justice." (p.36)
In the King James bible, the word of God in English, you can read in the book of James:
"From whence come wars and fightings among you? come they not hence, even of your lusts that war in your members?"
Furthermore, in the book of Romans, (by definition also a classic), it reads:
"As it is written, There is none righteous, no, not one: There is none that understandeth, there is none that seeketh after God. They are all gone out of the way, they are together become unprofitable; there is none that doeth good, no, not one."
And lastly, in proverbs, it reads:
"Every way of a man is right in his own eyes: but the LORD pondereth the hearts."
CLASSIC, noun. An author of the first rank; a writer whose style is pure, correct, and refined; primarily, a Greek or Roman author of this character; but the word is applied to writers of a like character in any nation.