Talmud

“Whoever destroys a soul [of Israel], it is considered as if he destroyed an entire world. And whoever saves a life of Israel, it is considered as if he saved an entire world.”

“A man should endeavor to be as pliant as a reed, and never unyielding like the cedar.”

“Let every man divide his money into three parts, and invest a third in land, a third in business, and a third let him keep by him in reserve.”

“One may decline the request of a lesser person, but one may not decline the request of a great person.”

“A legal decision depends not on the teacher's age, but on the force of his argument.”

“If your friend calls you a donkey, prepare a saddle for your back.”

“What is hateful to thee, do not unto thy fellow; this is the whole law. All the rest is a commentary to this law; go and learn it.”

“If one has eaten garlic and has acquired a bad odor, he must not eat more garlic because the bad odor is (about him) already.”

“Teach me the whole Torah while I stand on one foot.”