aequam memento rebus in arduis servare mentem

Etymology
Due to ; see first quotation.

Proverb

 * 1) Remember to keep a clear head in difficult times.
 * 2) * 23 BCE ,, Odes, book II, poem III, lines 1–2,
 * "la"

- Aequam memento rebus in arduis / servare mentem,