Nihil est incertius vulgo, nihil obscurius voluntate hominum, nihil fallacius ratione tota comitiorum. (Nothing is more unpredictable than the mob, nothing more obscure than public opinion, nothing more deceptive than the whole political system.)
Mathematics is an obscure field, an abstruse science, complicated and exact; yet so many have attained perfection in it that we might conclude almost anyone who seriously applied himself would achieve a measure of success.
It is generally said, "Past labors are pleasant," Euripides says, for you all know the Greek verse, "The recollection of past labors is pleasant."
[Lat., Vulgo enim dicitur, Jucundi acti labores: nec male Euripides: concludam, si potero, Latine: Graecum enim hunc versum nostis omnes: Suavis laborum est proeteritorum memoria.
The man who backbites an absent friend, nay, who does not stand up for him when another blames him, the man who angles for bursts of laughter and for the repute of a wit, who can invent what he never saw, who cannot keep a secret -- that man is black at heart: mark and avoid him.
The illustrious and noble ought to place before them certain rules and regulations, not less for their hours of leisure and relaxation than for those of business.