"Knowledge that is paid for will be longer remembered." ~~ Nachman of Bratslav
"None is poor save him that lacks knowledge." ~~ Talmud, Nedarim
"Who wants to know all grows old before his time." ~~ Yiddish Proverb
"Faith is beyond intelligence and perception." ~~ Shneur Zalman, Tanya
"Without understanding there is no knowledge, and without knowledge no understanding." ~~ Avot 3:17
"The heart of the intelligent seeks understanding." ~~ Proverbs (Mishle) 15:14
"When knowledge increases, doubt increases, too." ~~ T. Shapira
"The Creator, blessed be He, is He that knows, and what is known and knowledge itself, all in one." ~~ Rambam
"Scholars multiply peace on earth." ~~ Talmud, Berakhot
"Spend your money on expensive books and you will get their worth in golden knowledge." ~~ Ben Shlomo Immanuel
"It is better to know well than to know much." ~~ Mishle Yehoshua
"Our knowledge is a little island in a great ocean of nonknowledge. " ~~ Isaac Bashevis Singer