Students need to see thinking in action. Instead they are shown thinking accomplished, and the two look nothing alike.
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.
Heidegger was not a bad philosopher because he became a Nazi. But he may have become a Nazi because he was a bad philosopher.
A theory of mind must account for the existence of theories of mind.
The more open-minded you are, the less stupidity you can afford.
All taxonomies are right, but some are useful.
If many hold one view, at no cost to themselves, and a few hold the contrary, at grievous expense, which carries more weight?
The hunger remains as keen as ever for doctrine, for dogma, and any doctrine or dogma will do.
Science began to decline when we began to debate whether some particular bit of knowledge merited the term.
Always keep a book handy for when you’re not up to thinking.
Necessity is contingency in retrospect.