Dionysius of HeracleaThinkers

Anger (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠a swelling of the mind, and a swollen mind is no more in order than a swollen hand.

Anger (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠a longing to give all the pain you can to the one who wronged you, and so it ends in delight at a neighbor's misery.

Pain (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠proved an evil, said Dionysius of Heraclea, by the fact that after so many years of philosophy he still could not bear it.