Look at everything that exists, and observe that it is already in dissolution and change, and as it were putrefaction or dispersion, or that everythi… - Marcus Aurelius

If they've made a mistake, correct them gently and show them where they went wrong.

Ὅρα μὴ ἀποκαισαρωθῇς, μὴ βαφῇς· γίνεται γάρ. τήρησον οὖν σεαυτὸν ἁπλοῦν, ἀγαθόν, ἀκέραιον, σεμνόν, ἄκομψον, τοῦ δικαίου φίλον, θεοσεβῆ, εὐμενῆ, φιλόστοργον, ἐρρωμένον πρὸς τὰ πρέποντα ἔργα. ἀγώνισαι, ἵνα τοιοῦτος συμμείνῃς, οἷόν σε ἠθέλησε ποιῆσαι φιλοσοφία. αἰδοῦ θεούς, σῷζε ἀνθρώπους. βραχὺς ὁ βίος· εἷς καρπὸς τῆς ἐπιγείου ζωῆς, διάθεσις ὁσία καὶ πράξεις κοινωνικαί.

An angry countenance is much against nature, and it is oftentimes the proper countenance of them that are at the point of death. But were it so, that all anger and passion were so thoroughly quenched in thee, that it were altogether impossible to kindle it any more, yet herein must not thou rest satisfied, but further endeavour by good consequence of true ratiocination, perfectly to conceive and understand, that all anger and passion is against reason.