One of the sayings of Diogenes was that most men were within a finger's breadth of being mad; for if a man walked with his middle finger pointing out, folks would think him mad, but not so if it were his forefinger.
Diogenes LaertiusArcesilaus had a peculiar habit while conversing of using the expression, "My opinion is," and "So and so will not agree to this.
Diogenes Laertius