To discover the most appalling ignorance of science one need only canvass its most vociferous defenders.
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.
Free thinking, and worth every penny.
Humans think as women preach — not well, but one is surprised to find it done at all.
Sometimes we imagine things into existence, more often out of it.
The force of an analogy lies in the similarity; the point lies in the difference.
To follow your heart is exactly what people who are skilled at manipulating your emotions want you to do.
We rarely absorb ideas; they settle on us, like dust or ash.
Never let your pessimism interfere with your digestion.
There is no point in arguing over premises, which are assumed, or conclusions, which are contained in the premises.
Stupidity at an immense age becomes instrumental rationality, just as crime on an immense scale becomes statecraft.