The fact that we can describe the motions of the world using Newtonian mechanics tell us nothing about the world. The fact that we do, does tell us something about the world.

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

Just be indipendent of the external world, so you don't have to fear for what's in it.

One is unable to notice something because it is always before one's eyes.

All propositions are of equal value.

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

Don't ask what it means, but rather how it is used.