[Chad C. Mulligan]

There's a saying about engineers, but it also applies to scientists:

"They learn more and more about less and less until they become absolute experts about nothing."

Shedding all sense of morality and proportion in the process.

[mc5cents]

Which reminds me of this: A Phd is a degree where you learn more and more about less and less until you finally know everything there is to know about nothing.