A picture whose pictorial form is logical form is called a logical picture.

The common behavior of mankind is the system of reference by means of which we interpret an unknown language.

It is possible--indeed possible even according to the old conception of logic--to give in advance a description of all 'true' logical propositions. Hence there can never be surprises in logic.

I won't say 'See you tomorrow' because that would be like predicting the future, and I'm pretty sure I can't do that.

Genius is talent exercised with courage.

The world is made up of facts, not things.

The classifications made by philosophers and psychologists are like trying to classify clouds by their shape.