전도서 1:3의 Musar

And likewise did King Solomon, peace be upon him, say (Kohelet 9:4) "For he who is connected with the living has hope - even a live dog is better than a dead lion." Its explanation is that he praised life in this world with regards to repentance, performance of commandment[s] and attainment of spiritual virtues. And this is the hope that is found for those connected with the living. And the explanation of "even a live dog" is that even a lowly man that is alive can add to his spiritual virtues - which is not the case for a righteous sage that is dead. But in another place, he disgraced and condemned this world, regarding the attainment of pleasures and honor, and said (Kohelet 1:3) "What advantage is there for a man in all of his toil that he does beneath the sun?" And he also said (Kohelet 4:2), "Then I accounted those who died long since more fortunate than those who are still living."

It is well-known that this world is all emptiness, that every amusement is worthless, and woe is anyone who pursues vanity, which is worthless. And don't envy the rich, for "riches are hoarded by their owner to his misfortune" (Koheles 5:12); "As he had come from his mother's womb, naked will he return...exactly as he came he must depart, and what did he gain by toiling for the wind?" (ibid. 14, 15); "Even if he should live a thousand years twice over, but find no contentment - do not all go to the same place?" (Ib. 6:6); "Even if man lives many years, let him rejoice in all of them, but let him remember that the days of darkness will be many. All that comes is futility" (ib. 11:8); "And of joy, what does it accomplish?" (ibid. 2:2). Tomorrow you will cry for having laughed today. Do not lust after imaginary honor, for it is worthless and time is a traitor: it is like scales, which lift the light and lower the weighty. The world is like one who drinks salty water: he thinks it quenches his thirst, but it only makes him thirstier. No one leaves the world with even half his cravings fulfilled (Koheles Rabbah 1). "What profit does one have from all his toils under the sun" (Koheles 1:3)? Remember our predecessors, all of whose love, desire and joy have ceased to exist (see Koheles 9:6), but who are being judged severely for them. And of what benefit is gratification to man - whose end is dust, maggots and worms, as he is bound to die - when all his enjoyments turn to bitterness in the grave? And what is this world, whose days are full of anguish and pain which prevent one from sleeping? Neither is death a mikveh. Man will be judged for everything he says; even the slightest expression is not overlooked.