"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 was a previous East German spymaster and this quote is in recommendation to intelligence work. He is suggesting that it is rational to make use of human weak points in intelligence work. He is suggesting that intelligence work involves looking at all elements of a person, including their weak points. This is performed in order to gain a benefit in intelligence operations. By understanding the weaknesses of an individual, intelligence operatives can use this information to their advantage. Wolf is suggesting that this is a rational technique to intelligence work which it is something that will keep coming up. He is emphasizing the importance of taking a look at all aspects of an individual in order to gain an advantage in intelligence operations.