Experience is the universal mother of sciences.
Do you see over yonder, friend Sancho, thirty or forty hulking giants? I intend to do battle with them and slay them.
Evil comes not amiss if it comes alone.
It seldom happens that any felicity comes so pure as not to be tempered and allayed by some mixture of sorrow.
There is no proverb that is not true.
Diligence is the mother of good fortune, and idleness, its opposite, never brought a man to the goal of any of his best wishes.