I called the world mad, and the world called me mad, and they outvoted me.

Possibly apocryphal remark to a visitor asking why he was incarcerated in Bedlam for five years; this is often misquoted as "They called me mad, and I called them mad, and damn them, they outvoted me." (c. 1987), but that does not appear in either version written by Joseph Priestley in the 1700s