curiosity killed the cat and satisfaction brought it back (traditional)
Curiosity is the very basis of education and if you tell me that curiosity killed the cat, I say only the cat died nobly. ~Arnold Edinborough
I find that a great part of the information I have was acquired by looking up something and finding something else on the way. ~Franklin P. Adams (pre google)
My favorite :
It is, in fact, nothing short of a miracle that the modern methods of instruction have not entirely strangled the holy curiosity of inquiry.
Albert Einstein