Allan Kardec. The book of spirits (№ 397591)

The more evil, the more disgusting it becomes. Egoism had to do a lot of evil, in order to understand the necessity of its destruction. When people are freed from selfishness, now ruling over them, you will begin to live as brothers, not making each other evil, but rather as a result of mutual feelings of solidarity and helping each other; then a strong will be the mainstay, not the oppressor of the weak, and no more people in need of necessary, because everyone will actually accomplish the act of justice. This Kingdom of good, the preparation of which is imposed on spirits.