I find it necessary on the first page of this book, quite ready for publication, to give the following advice

Firstly: at least as you have already become mechanized to read all your contemporary books and newspapers. | Secondly: as if you were reading aloud to another person. | And only thirdly: try and fathom the gist of my writings. Only then will you be able to count upon forming your own impartial judgment, proper to yourself alone, on my writings. And only then can my hope be actualized that according to your understanding you will obtain the specific benefit for yourself which I anticipate, and which I wish for you with all my being. | "Friendly Advice [Written impromptu by the author on delivering this book, already prepared for publication, to the printer" (1949)