Like that's the only reason anyone would ever buy a first-aid kit? Don't take this the wrong way, Professor McGonagall, but what sort of crazy children are you used to dealing with?" "Gryffindors," spat Professor McGonagall, the word carrying a freight of bitterness and despair that fell like an eternal curse on all youthful heroism and high spirits.

By and large, the answer to the question "How do large institutions survive?" is "They don't!" The vast majority of large modern-day institutions - some of them extremely vital to the functioning of our complex civilization - simply fail to exist in the first place.

Let the winds of evidence blow you about as though you are a leaf, with no direction of your own. Beware lest you fight a rearguard retreat against the evidence, grudgingly conceding each foot of ground only when forced, feeling cheated. Surrender to the truth as quickly as you can.

I only want power so I can get books.

The strength of a theory is not what it allows, but what it prohibits; if you can invent an equally persuasive explanation for any outcome, you have zero knowledge.

This is one of theprimary mechanisms whereby, if a fool says the sun is shining, we do notcorrectly discard this as irrelevant nonevidence, but rather find ourselvesimpelled to say that it must be dark outside.

Existential depression has always annoyed me; it is one of the world's most pointless forms of suffering.