Time ripens all things. No man is born wise. Bishops are made of men and not of stones.
Nadie nace enseñado, y de los hombres se hacen los obispos, que no de las piedras.
Original text (Spanish)
Notes from Wikiquote
Ch. 33. Note: "Time ripens all things" is the translator's interpolation and does not appear in the original Spanish text.