But doesn't it come out here that knowledge is related to a decision?

What is the proof that I know something? Most certainly not my saying I know it.

Philosophy should make clear and delimit sharply the thoughts which otherwise are, as it were, opaque and blurred.

All testing, all confirmation and disconfirmation of a hypothesis takes place already within a system. And this system is not a more or less arbitrary and doubtful point of departure for all our arguments: no, it belongs to the essence of what we call an argument. The system is not so much as the point of departure, as the element in which arguments have their life.

I give no sources, because it is indifferent to mewhether what I have thought has already beenthought before me by another.

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

It is difficult to describe paths of thought where there are already many paths laid down, and not fall into one of the grooves