And it shall be when your son asks you in time to come, saying, What is this? that you shall say to him…
Knowledge cannot be stolen by or from you. It cannot be sold or bought. You may be poor, and be troubled by the sheriff on the journey of life. He may break into your house and sell your furniture at auction; drive away your cow; take away your ewe lamb, and leave you homeless and penniless; but he cannot lay the law's hand upon the jewellery of your mind. This cannot be taken for debt; neither can you give it away, though you give enough of it to fill a million minds. In getting rich in the things which perish with the using, men have often obeyed to the letter that first commandment of selfishness: "Keep what you can get, and get what you can." In filling your minds with the wealth of knowledge, you must reverse this rule, and obey this law: "Keep what you give, and give what you can." The fountain of knowledge is filled by its outlets, not by its inlets. You can learn nothing which you do not teach; you can acquire nothing of intellectual wealth except by giving.
Parallel VersesKJV: And it shall be when thy son asketh thee in time to come, saying, What is this? that thou shalt say unto him, By strength of hand the LORD brought us out from Egypt, from the house of bondage: