Quotations about:
    good temper

The wise man preserves a smooth-tempered self-control.

[πρὸς σοφοῦ γὰρ ἀνδρὸς ἀσκεῖν σώφρον᾽ εὐοργησίαν.]

Euripides (485?-406? BC) Greek tragic dramatist

Bacchæ [Βάκχαι], l. 641ff [Dionysus/Διόνυσος] (405 BC) [tr. Vellacott (1973)]
    (Source)

An ironic statement from Dionysus, of how he will keep his calm and temper in the face of Pentheus' disrespectful fury. In very short order, Dionysus is (calmly) setting up Pentheus' self-destruction through the Bacchantes' frenzy.

(Source (Greek)). Alternate translations:

For it behoves the wise
To curb the sallies of outrageous ire.
[tr. Wodhull (1809)]

For it is the part of a wise man to practice restrained good temper.
[tr. Buckley (1850)]

’Tis easy to a wise man To practise self-command.
[tr. Milman (1865)]

For a wise man ever knoweth how to keep his passion down.
[tr. Rogers (1872)]

For ’tis a wise man’s way to school his temper into due control.
[tr. Coleridge (1891)]

For it is the wise man's part to rein his wrath in soberness.
[tr. Way (1898)]

For still are the ways of Wisdom, and her temper trembleth not!
[tr. Murray (1902)]

Wise men know constraint: our passions are controlled.
[tr. Arrowsmith (1960)]

For it is the quality of a wise man to exercise restrained good temper.
[tr. Kirk (1970)]

The secret of life is
Balance, tolerance.
[tr. Soyinka (1973)]

A wise man should practice pure thought and good temper.
[tr. Neuburg (1988)]

A wise man knows restraint. His strength is his detachment.
[tr. Cacoyannis (1982)]

For the wise know gentleness is wisdom.
[tr. Blessington (1993)]

For it is the part of a wise man to employ a controlled and gentle temper.
[tr. Esposito (1998)]

A wise man trains his temper to be good and calm.
[tr. Woodruff (1999)]

Because a man
Who is wise has self-control and gentleness of temper.
[tr. Gibbons/Segal (2000)]

It is a wise man's part to practice gentleness and self-control.
[tr. Kovacs (2002)]

He who would be wise will keep his self-control.
[tr. Teevan (2002)]

That is how wise people work, calmly.
[tr. Theodoridis (2005)]

A wise man is able to hold his good-nature well tempered.
[tr. Valerie (2005)]

After all, a wise man ought to keep his temper.
[tr. Johnston (2008)]

He should learn from me the ways of self-control.
[tr. Robertson (2014)]

Keep calm and carry on, as the wisest say.
[tr. Pauly (2019)]

The wise man has a reasonable temper.
[tr. Behr/Foster (2019)]

A sophos man must practice good temper that is moderate [sōphrōn].
[tr. Buckley/Sens/Nagy (2020)]