Making use of human weaknesses in intelligence work is a logical matter. It keeps coming up, and of course you try to look at all the aspects that interest you in a human being. – Markus Wolf
If you do not wish a man to do a thing, you had better get him to talk about it for the more men talk, the more likely they are to do nothing else. – Thomas Carlyle
I never was good at learning things. I did just enough work to pass. In my opinion it would have been wrong to do more than was just sufficient, so I worked as little as possible. – Manfred von Richthofen
