"people have to talk about something just to keep their voice boxes in working order, so they'll have good voice boxes in case there's ever anything really meaningful to say"
.....
The ..woman's expression implied that she would go crazy on the spot if anybody did any more thinking...she hated people who thought too much.  At that moment, she struck me as an appropriate representative for almost all mankind.

"I think you'll find, that everybody does about the same amount of thinking.  Scientists think about things in one way, and other people think about things in others."

from Cat's Cradle by Kurt Vonnegut