In anger we should refrain both from speech and action.
ἐν ὀργῇ μήτε τι λέγειν μήτε πράσσειν

Philosophers
Pythagoras
Ancient Greek thinker from Samos (c. 570 BC) who led a religious community in Croton. He linked string ratios to harmony, taught transmigration of souls, and planted the conviction that nature's truths are mathematical.
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Pythagoras's Other Quotes
There is geometry in the humming of the strings, there is music in the spacing of the spheres.
Do not say a little in many words, but a great deal in few.
Friends are companions on a journey who ought to help each other persevere on the road to a happier life.
All things are number.
The things of friends are common, and friendship is equality.
Related Quotes
Anger, if not obeyed, fades; once it enters the mind and pervades habit, vice becomes law.
-- Seneca
The things of friends are common, and friendship is equality.
-- Pythagoras
It is not living that matters, but living rightly.
-- Socrates
No one desires evil.
-- Socrates
Ethics is the ground of being of human community — the way of aidagara (betweenness) between person and person.
-- Tetsuro Watsuji
Do not impose on others what you yourself do not desire.
-- Confucius