We often see or hear, "A little knowledge is a dangerous thing."
The second half of the couplet is, "Drink deep at the Pyrrhian spring."

(Why my kids thing I'm imbibing when I'm on Lactnet.)
I left out Dia Michaels' "Breastfeeding IQ Test" at the nursing station
last night with a post-it that said "And you guys think I'm a fanatic!"

They grabbed it and were reading things out loud to each other!  (Oh how
sneaky we can be...)  Thanks Dia!

Dawn Kersula, Green Mtn Mama etc
"Oh wonderful wonderful and yet again wonderful and after that out of all
whooping."   Madeline L'Engle