I did this not for you, nor for Germany, but for the world.
To Otto Warburg (21 June 1941)
The number is arrived at through a calculation on the basis of a ratio of 1000 to 10 to 5 to 1. That means, out of 1000 people 10 require psychiatric treatment, of these 5 in residential form, and of these 1 patient will come out of the programme. If one applies this to the population of the Great German Reich, then one must reckon with 65 to 75,000 cases. With this statement the question of who can be regarded as settled.
At a meeting in Berlin about who should be exterminated (1939)