A rude driver, an unfair boss, a comment online. Anger arrives in a second and can cost months. Nearly every tradition has thought hard about it, and they agree on more than you might expect: anger is understandable, rarely useful, and something you can learn to cool.
Seneca wrote a whole book, On Anger, for his brother. His single most practical piece of advice is that the greatest remedy for anger is delay. The first surge passes; decisions made inside it rarely look wise a day later.
Seneca, On Anger 2.29
“How much more harmful are the consequences of anger and grief than the causes of them!”Marcus Aurelius, Meditations 11.18
“The best way of avenging yourself is not to become like the wrongdoer.”Marcus Aurelius, Meditations 6.6
“Hatred does not cease by hatred at any time: hatred ceases by love — this is an old rule.”Dhammapada 5 (tr. Max Müller)
Later, the commentator Buddhaghosa compared an angry person to someone who picks up a burning ember to throw at another: whoever holds it is burned first (Path of Purification, IX).
Krishna traces the chain: dwelling on things breeds attachment, attachment breeds desire, thwarted desire becomes anger, anger clouds judgment, and clouded judgment leads to ruin. Break the chain early, at the dwelling.
Bhagavad Gita 2.62–63
Aristotle did not think all anger was wrong. Being angry is easy, he said; being angry with the right person, to the right degree, at the right time, for the right reason and in the right way is hard. Some anger at injustice is part of good character. The aim is not to feel nothing, but to feel well.
Aristotle, Nicomachean Ethics II.9 and IV.5
Go deeper: Taming Anger, a five-day journey, or the dilemma Revenge or Let It Go.