The Mishnah taught that neither a single man nor a woman should teach children etc.

Beraisa (R. Eliezer): Even a man who has a wife and children, if they are not currently with him in that town, he should not teach children.

R. Yudan bei R. Yishmael once removed a teacher from his post whose wife was not in the town.

The Mishnah taught: R. Yehudah says that a single man should not be a shepherd nor should two single men sleep with the same covering. However, the Chachamim permit it.

Question: R. Yehudah is understandable, but why do Rabbanan (Chachamim) permit it?

Answer: Heaven forefend! Jews are not suspected of relations with another man or with an animal.

Question: But the Mishnah taught that a single man should not teach children?!

Answer: The reason there is because the child's mother or sister will bring him (and we do not wish them to speak to this teacher who is a single man).

The Mishnah taught: A man should not teach his son a profession that involves women.

Beraisa: A man should not teach his son to be a donkey driver, a camel driver, a sailor, a potter, a shepherd or a shopkeeper, because their professions involve robbery.

The Mishnah taught: Aba Gurion of Tzaidon says citing Aba Shaul...etc.

Most donkey drivers are evildoers, most camel drivers are upright, most sailors are pious, most Mamzerim are cunning (like their adulterous fathers), most slaves are haughty, most people of fine genealogy are embarrassed (to take from the public charity fund), most sons are like their uncles (i.e. their mother's brothers), the best doctors go to Gehinnom; the best butcher is a partner of Amalek. .

Beraisa (R. Shimon ben Yochai): The best snake might still kill you; the best woman might still do witchcraft. Fortunate is a person who does the will of Hash-m.

R. Meir: Either way, a person receives sustenance - fortunate is a person who sees his parents (and children) in a fine profession and woe is to a person who sees his parents (and children) in a lowly profession.

The Mishnah taught: R. Meir says - A man should always try to teach his son a profession that is clean etc.

What should a person do? He should make effort and teach his son an easy profession and pray and ask for mercy from The One who has all wealth. For in every profession there are poor and rich; in truth, everything depends on the person's merit.

R. Shimon ben Elazar citing R. Meir: Did you ever see a lion who is a carrier; a lion who dries fruit; a fox who is a shopkeeper; a wolf who sellers pottery - all of these receive sustenance without difficulty. They were created to serve me and I was created to serve my creator, so if they are sustained without difficulty, certainly I should also be sustained without difficulty. What caused me to have difficulty? My sins, as I turned my ways to evil and prevented my sustenance (from coming easily)!

(Mishnah - R. Nehurai): I set aside all of the professions in the world and I only teach my sons Torah, as a person eats from its reward in this world but the principal is kept for the next world. All other professions are not this way, as if a person becomes sick or old or comes to suffering and he cannot work, he will die or be starving. The Torah is not this way as it guards a person from all evil in his youth and gives him hope when he is old...

In his youth, the pasuk states (Yishayahu 40, 31), "...and those who hope for Hash-m will be given renewed strength, they will grow wings like an eagle; they will run and not become weary, they will walk and not tire''. When he is old, the pasuk states (Tehilim 92, 15), "They will still be fruitful in their old age, spirited and fresh they shall be''. The pasuk also says about Avraham Avinu (Bereshis 24, 1), "Avraham was old, he came with his days and Hash-m blessed him with everything''. We find that Avraham Avinu kept all of the laws of the Torah before it was given, as the pasuk states (Bereishis 26, 5), "...because Avraham heard My voice and he guarded My safeguards, My Mitzvos, My statues and My Torahs''.:

(Gemara - R. Nehurai): I set aside all of the professions in the world and I only teach my sons Torah, as all professions can only help a person when he is young, when he has his strength, but if he comes to sickness or old age or suffering, he will not be able work and he will die of starvation. But Torah is not this way, as it honors him and guards him from all evil in his youth and it gives him hope when he is old. When he is young the pasuk states (Yishayahu 40, 31), "...and those who hope for Hash-m will be given renewed strength, they will grow wings like an eagle; they will run and not become weary, they will walk and not tire''. When he is old, the pasuk states (Tehilim 92, 15), "They will still be fruitful in their old age, spirited and fresh they shall be''.

We find that Avraham Avinu kept all of the laws of the Torah before it was given, as the pasuk states (Bereishis 26, 5), "...because Avraham heard My voice and he guarded My safeguards, My Mitzvos, My statues and My Torahs''.

It also made him great and blessed him in his youth and gave him hope in his old age...

In his youth, as the pasuk states (Bereishis 13, 2), "Avraham was very laden with livestock, with silver and with gold''. In his old age, the pasuk states, "and Hash-m blessed Avraham with everything''.

R. Chizkiyah/ R. Kohen citing Rav: A person may not live in a city that does not have in it a doctor, a bathhouse and a Beis Din that can enforce its rulings.

R. Yosi bei R. Bun: It is also not permitted to live in a town that does not have vegetable gardens.

R. Chizkiyah/R. Kohen citing Rav: A person will give a reckoning for everything his eye saw but he did not eat it.

R. Elazar was careful about this statement and he would save up perutos until he had enough money to be able to eat from each new fruit once a year.