It is commonly said, and more particularly by Lord Shaftesbury, that ridicule is the best test of truth.

Let blockheads read what blockheads write.

Every woman is infallibly to be gained by every sort of flattery, and every man by one sort or other.

Knowledge may give weight, but accomplishments give luster, and many more people see than weigh.

Que sais-je?

That which has always been accepted by everyone, everywhere, is almost certain to be false.

De omnibus dubitandum