It is not humanly possible to gather immediately from it what the logic of language is. Language disguises thought.

Black seems to make a colour cloudy, but darkness doesn't. A ruby could thus keep getting darker without ever becoming cloudy; but if it became blackish red, it would become cloudy.

The philosopher is not a citizen of any community of ideas, that is what makes him a philosopher.

The process of induction is the process of assuming the simplest law that can be made to harmonize with our experience.

There is a truth in Schopenhauer’s view that philosophy is an organism, and that a book on philosophy, with a beginning and end, is a sort of contradiction. ... In philosophy matters are not simple enough for us to say ‘Let’s get a rough idea’, for we do not know the country except by knowing the connections between the roads.

Language is a part of our organism and no less complicated than it.

To understand a sentence means to understand a language. To understand a language means to be master of a technique.