Here's some profound sentences for ancient Roman authors. The translations are all my own so all the mistakes are mine.
1. Nullus accusator caret culpa; omnes peccavimus (Seneca)
"No accuser is without crimes; we all have sinned."
Even pagan philosophers can figure out original sin!
2. Nulla pars vitae vacare officio potest (Cicero)
"No part of life can be free from duty."
This is also very true, even if we don't like it.
3. Prima virtus est vitio carere. (Quintilian)
"The first virtue is to lack faults."
And so according to Seneca we do not have the first virtue
