The child learns to believe a host of things. I.e. it learns to act according to these beliefs. Bit by bit there forms a system of what is believed, and in that system some things stand unshakeably fast and some are more or less liable to shift. What stands fast does so, not because it is intrinsically obvious or convincing; it is rather held fast by what lies around it.

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

Hell isn't other people. Hell is yourself.

Courage, not cleverness; not even inspiration, is the grain of mustard that grows up to be a great tree.

What is left over if I subtract the fact that my arms goes up from the fact that I raise my arm?

There is not a philosophical method, though there are indeed methods, like different therapies.

Don't for heaven's sake, be afraid of talking nonsense! But you must pay attention to your nonsense.