"I know how the birds fly, how..." - Quote by Confucius

“Those who make virtue their profession are the ruin of virtue.”

“Never do to others what you would not like them to do to you.”

“Know what you know and know that you don't know what you don't know — that is the characteristic of one who knows.”

“The world is a puzzling place today. All these banks sending us credit cards, with our names on them. Well, we didn't order any credit cards! We don't spend what we don't have. So we just cut them in half and throw them out, just as soon as we open them in the mail. Imagine a bank sending credit cards to two ladies over a hundred years old! What are those folks thinking?”

“The man who is a pessimist before 48 knows too much; if he is an optimist after it, he knows too little.”

“Silence is the true friend that never betrays.”

“An observer of men who finds himself steadily repelled by some apparently trifling thing in a stranger is right to give it great weight. It may be the clue to the whole mystery. A hair or two will show where a lion is hidden. A very little key will open a very heavy door.”

“Nature! We live in her midst and know her not. She is incessantly speaking to us, but betrays not her secret. We constantly act upon her, and yet have no power over her. Variant: NATURE! We are surrounded and embraced by her: powerless to separate ourselves from her, and powerless to penetrate beyond her.”

“Life is a luminous pause between two mysteries that are yet one.”