Elisha ben Abuyah would say: A person who has done good deeds and has learned a lot of Torah, what is he like? Like a person who builds by placing stones down first and then setting bricks on top. Even if a flood comes, the building will stand firm and not be washed away from its place.⁠a And a person who has not done good deeds but has learned Torah, what is he like? Like a person who builds by placing the bricks down first, and then placing stones on top. Even if a little water comes, it will topple the building right away. He would also say: A person who has done good deeds and learned a lot of Torah, what is he like? Like bricks coated with plaster. Even if heavy rains fall on them, they will not move from their place. A person who has not done good deeds but has learned a lot of Torah is like bricks coated with plaster. Even if light rains fall on them, they crumble right away. He would also say: A person who has done good deeds and has learned a lot of Torah is like a cup with a flat base. When one sets it down, even if it is knocked over, not all of its contents will spill. A person who has not done good deeds but has learned a lot of Torah is like a cup without a flat base. When one sets it down, it immediately falls over on its side, and all of its contents spill out.He would also say: A person who has done good deeds and has learned a lot of Torah is like a horse that has fine equipment. A person who has not done good deeds but has learned a lot of Torah is like a horse without a bridle to restrain it. When a person wants to mount the horse, it throws him off in an instant.He would also say: For one who studies Torah in his youth, the words of Torah are absorbed into his blood and come forth from his mouth with clear articulation. For one who studies Torah in his old age, the words of Torah are not absorbed into his blood and do not come forth from his mouth with clear articulation. And there is a well-known saying that: If you did not want them in your youth, you will not be able to get them in your old age. He would also say: Words of Torah are as difficult to acquire as golden vessels. And they are as easy to lose as glass vessels, as it says (Job 28:17), “It cannot be estimated by gold and glass.” Gold is compared to glass to say that gold, when it is broken, can be fixed (but glass vessels cannot be fixed when they are broken unless they are completely remade. And how can I understand [the second half of the verse]), “Nor exchanged for fine golden vessels”? This is to tell you that when one studies words of Torah and fulfills them, his face shines like fine gold. But when one studies words of Torah but does not fulfill them, his face is dark like glass. He would also say: A person can study Torah for twenty years and forget it all in two years. How so? If he sat for six months and did not review what he had learned, he would begin to say that what was impure was pure, and what was pure was impure. After twelve months of no review, he would mix up the names of the sages. After eighteen months of no review, he would forget the beginnings of the tractates. After twenty-four months of no review, he would forget the beginnings of the chapters. Finally, he would have to sit and be silent. [King] Solomon said about such a person (Proverbs 24:30–31), “I passed by the field of a lazy man, and by the vineyard of a heartless person. It was all overgrown with thorns, its surface was covered with weeds, and the stone wall around it had been destroyed.” And when the wall of a vineyard falls, soon enough the whole vineyard is destroyed. He would also say: Anyone who helps his friend perform a mitzvah, the Torah considers it as if he had done it himself. A parable: To what can this be compared? [It can be compared] to a human king who captured a bird and gave it to one of his servants. The king said to him: Be careful with this bird. For if you treat it with care, all will be well. But if you do not, I will take your life for it. So did the Holy Blessed One say to Israel: If you observe these words of Torah that I have given to you, all will be will. But if not, I will take your lives because of them, as it says (Deuteronomy 4:9), (“Just be very careful to protect your life, lest you forget these things that your eyes have seen.”) (And in Deuteronomy 32:47), “It is not an empty thing for you, for it is your very life.”