Full Idea
The scientist learns more and more about less and less, until she knows everything about nothing, whereas a philosopher learns less and less about more and more until he knows nothing about everything.
Gist of Idea
Scientists know everything about nothing, philosophers nothing about everything
Source
Dorion Sagan (Cosmic Apprentice [2013])
Book Reference
Mellor,D.H.: 'Real Time II' [Routledge 1998]
A Reaction
[Came via Twitter] Not sure if this is true, but it is too nice to miss.