Knowledge is indivisible. When people grow wise in one direction, they are sure to make it easier for themselves to grow wise in other directions as well. On the other hand, when they split up knowledge, concentrate on their own field, and scorn and ignore other fields, they grow less wise—even in their own field.
Isaac Asimov
Isaac Asimov (1920–1992), Russian-born U.S. author. The Roving Mind, ch. 25, Prometheus Books (1983).