"When a student knows that his teacher is able to answer him, he may ask a question; otherwise, he should not." ~~ Talmud, Hulllin 6a
"It is imperative that most men work in [physically] productive occupations, so that the few who devote themselves entirely to learning may have their wants provided; in this way, the human race goes on, and knowledge is enriched." ~~ Maimonides
"To seek wisdom in old age is like a mark in the sand; to seek wisdom in youth is like an inscription on stone." ~~ Ibn Gabirol
"The philosophy of a nation is to be found in its proverbs at times. " ~~ Chaim Nachman Bialik
"When you sit before the wise, let it be your wish to listen rather than lecture!" ~~ Mivchar Hapeninim
"Education is that which remains, when one has forgotten everything he learned in school." ~~ Albert Einstein
"The pointed proverb is like a diamond, it sends out light and it also cuts." ~~ Franz Rosenzweig
"A man should not say, “I will love the learned and hate the unlearned”; he should say, “I will love them all.”" ~~ Avot Derabbi Nathan, 16
"If you do not suffer the toil of study, you will suffer the toil of ignorance." ~~ Moshe Ben Ezra
"Don’t look for more honor than your learning merits. " ~~ Traditional Proverb
"Just as the mirror should be more polished than the gazer, so should the teacher be more brilliant than the pupil." ~~ Moshe Ben Ezra
"Blessed is the son who studies with his father, and blessed is the father who teaches his son." ~~ Talmud