MARCUS: All things are tolerable which others have borne and are bearing.

[Sed significat tolerabilia esse, quae et tulerint et ferant ceteri.]

Marcus Tullius Cicero (106-43 BC) Roman orator, statesman, philosopher

Tusculan Disputations [Tusculanae Disputationes], Book 2, ch. 23 (3.23) / sec. 57 (3.57) (45 BC) [tr. Yonge (1853)]
    (Source)

(Source (Latin)). Alternate translations:

Those things are in themselves tolerable, which others have born, and do bear.
[tr. Wase (1643)]

All things are tolerable which others have borne and can bear.
[tr. Main (1824)]

What others have endured and endure must be tolerable.
[tr. Otis (1839)]

Things are tolerable which others have borne and are bearing.
[tr. Peabody (1886)]

The circumstances at hand are indeed tolerable, since others have tolerated them and continue to do so.
[tr. Graver (2002)]