"Docendo discimus..." (While we teach we learn)
" Recede in te ipse quantum potes; cum his versare qui te meliorem facturi sunt, illos admitte quos tu potes facere meliores. Mutuo ista fiunt, et homines dum docent discunt. "
Seneca, Letters to Lucilius Junior, Letter VII
" Withdraw into yourself, as far as you can. Associate with those who will make a better man of you. Welcome those whom you yourself can improve. The process is mutual; for men learn while they teach. "