I thought to myself, "I have become much wiser than any of my predecessors who ruled over Jerusalem; I have acquired much wisdom and knowledge."

The sleep of the laborer is pleasant -- whether he eats little or much -- but the wealth of the rich will not allow him to sleep.

For he does not think much about the fleeting days of his life because God keeps him preoccupied with the joy he derives from his activity.

Wisdom is better than weapons of war, but one sinner can destroy much that is good.

One dead fly makes the perfumer's ointment give off a rancid stench, so a little folly can outweigh much wisdom.

Be warned, my son, of anything in addition to them. There is no end to the making of many books, and much study is exhausting to the body.