Convincing others is the minor problem with argument; the major one is convincing yourself.
Erring
Error is boundless.
Nor hope nor doubt,
Though both be groundless,
Will average out.
—Cunningham
What you call hypocrisy I call hedging against the possibility that one’s beliefs are in error.
Most of what we are told is better than nothing is in fact far worse.
The crank cannot be refuted, only dismissed.
Whatever the fanatic permits himself is a duty: whatever he denies himself is a crime.
A belief no fact can sink no fact can float.
The good cause that leads to bad outcomes may not be all that good a cause.
A very few rigorous social processes — scientific method, trial by jury — converge on truth reliably. Argument is not among them.
Intelligence, n. The ability to make more elaborate errors, with more plausible justifications.
Someone who understands politics is about as likely to set up as a pundit as someone who can predict the future is to set up as a psychic.