mutantur omnia nos et mutamur in illis
All things change, and we change with them.
una salus victis nullam sperare salutem
The one safety for the vanquished is to abandon hope of safety
(knowing that there is no hope can give one the courage to fight and win)
perfer et obdura; dolor hic tibi proderit olim
Be patient and tough; some day this pain will be useful to you.