(literally) to point with all five fingers / (figurative, derogatory) to conceitedly point the finger at people, especially to tell them what to do

Even smart people can have a momentary lapse in judgement. / Even Homer sometimes nods. / It only takes an hour of stupidity (dại một giờ) to negate the smartness of three years (khôn ba năm)

revenge is a dish best served cold

(literally) during May nights you can barely rest before the sun rises, and during October days you can barely have fun before it sets / (figurative) May nights are shorter and October days are longer than usual