A knight errant who turns mad for a reason deserves neither merit nor thanks. The thing is to do it without cause.

Be a terror to the butchers, that they may be fair in their weight; and keep hucksters and fraudulent dealers in awe, for the same reason.

To withdraw is not to run away, and to stay is no wise action, when there's more reason to fear than to hope.

All kinds of beauty do not inspire love; there is a kind which only pleases the sight, but does not captivate the affections. [Sp., No todas hermosuras enamoran, que algunas alegran la vista, y no rinden la voluntad.]

Said the pot to the kettle, "Get away, blackface." [Sp., Dijo la sarten a la caldera, quitate alla ojinegra.]

Let us not throw the rope after the bucket. [Sp., No arrojemos la soga tras el caldero.]