Understanding the simple fact that morality differs around the world, and even within societies, is the first step toward understanding your righteou… - Jonathan Haidt

Gossip and reputation make sure that what comes around - a person who is cruel will find that the others are cruel back to him, and a person who is kind will find others are kind in return. Gossip paired with reciprocity allow karma to work here on earth, not in the next life. As long as everyone plays tit-for-tat augmented by gratitude, vengeance, and gossip, the whole system should work beautifully.

Groups create supernatural beings not to explain the universe but to order their societies.

Letting off steam makes people angrier, not calmer. Pennebaker discovered that it’s not about steam; it’s about sense making. The people in his studies who used their writing time to vent got no benefit. The people who showed deep insight into the causes and consequences of the event on their first day of writing got no benefit, either: They had already made sense of things. It was the people who made progress across the four days, who showed increasing insight; they were the ones whose health improved over the next year.