Quotations that have enduring meaning and significance are those that offer unique insight into human nature. That is certainly true of these.

“If you inspire others to dream more, learn more, do more and become more, you are a leader.” John Quincy Adams

“What I hear I forget, what I see I remember, what I do I know.” Chinese proverb

“Yesterday’s dangerous idea is today’s orthodoxy and tomorrow’s cliché.” Richard Dawkins

“Try not to become a man of success but try rather to become a man of value.” Albert Einstein

“Only those who risk going too far can possibly find out how far to go.” T.S. Eliot

“Civilization is the encouragement of differences.” Mohandas Gandhi

“You cannot discover new oceans unless you have the courage to lose sight of the shore.” André Gide

“Where there is an open mind there is always an open frontier.” Charles Kettering

“Give me six hours to chop down a tree and I will spend the first four sharpening the axe.” Abraham Lincoln

“Life is a process of becoming, a combination of states that we have to go through. Where people fail is that they wish to elect a state and remain in it.” Anaïs Nin

“Individually, we are one drop. Together, we are an ocean.” Ryunosuke Satoro

“Dress British, think Yiddish.” unofficial motto at Salomon Brothers

“We should give as we would receive, cheerfully, quickly, and without hesitation; for there is no grace in a benefit that sticks to the fingers.” Seneca

“So throw off the bowlines, sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.” Mark Twain

“Silence is the fence around wisdom.” and “If you ever need a helping hand, you’ll find one at the end of your arm.” Yiddish Proverbs

By the way, my favorite anthology is The Yale Book of Quotations, edited by Fred R. Shapiro. Several (but not all) of these quotations are included in his collection.