The ability to think lies decided in myself, because I think: what I think lies decided in myself;
The ability to think in myself is given, because I think: what I think is given;
The ability to read lies decided in myself, because I read: what I read lies decided in myself;
The ability to read in myself is given, because I read: the meaning that lies decided in the letters of the words I read is given, because I read words:
I am unable to prove the meaning that lies decided in the letters of the words I read.

This booklet shows that the ability to think can be formalized: it follows from this formalization that I can not explain myself.