When scientists take part in activity they transform themselves from scientists into acting beings, that is, they become elements, data, facts; as soon as they reflect on their activity, however, they are re-transformed into scientists. The trained specialist qua scientist looks upon himself as a chain of judgments and inferences; qua member of society, he regard himself as a mere object. The same holds for everyone. The individual is divided into innumerable functions, the interconnection of which are unknown. In society a man is pater familias under one aspect, business man under another, thinker under a third; to be more precise, he is not a human being at all, but all these aspects and many more in an inevitable succession.

p. 155. - "The Latest Attack on Metaphysics" (1937)