Mental effort dwarfs all other costs.
Operations of thought are like cavalry charges in a battle — they are strictly limited in number, require fresh horses, and must only be made at decisive moments.
The facts never speak for themselves.
Ingenuity is fatal in philosophers.
To make a reputation as a deep thinker, settle on a single half-truth early, and spend the rest of your life flogging it.
The last heresy is orthodoxy.
The less a discipline resembles mathematics, the less likely a clever theory is to be true.
If you wish to make a belief disappear, don’t waste your time demonstrating that it is an illusion. Demonstrate that it makes you fat.
Credulity is fixed: doubting something obvious just clears space for believing something foolish.
In every discipline the foundations come last; in most of them we still don’t know what they are.
The critique is usually pertinent, the positive program disastrous.