It is an hypothesis that the sun will rise tomorrow: and this means that we do not know whether it will rise.

The limits of my language means the limits of my world.

Philosophy is a battle against the bewitchment of our intelligence by means of language.

A philosophical problem has the form: I don't know my way about.

I don't know why we are here, but I'm pretty sure that it is not in order to enjoy ourselves.

The National Academy of Sciences would be unable to give a unanimous decision if asked whether the sun would rise tomorrow.