There is no vice or folly that requires so much nicety and skill to manage as vanity; nor any which by ill management makes so contemptible a figure.
Words are but wind; and learning is nothing but words; ergo, learning is nothing but wind.
If the world had but a dozen Arbuthnots in it, I would burn my Travels.
Argument is the worst sort of conversation.
Invention is the talent of youth, as judgment is of age.
Bread is the staff of life.