Ecclesiastes 12:9-12

9Not only was the Teacher wise, but he also taught knowledge to the people; he carefully evaluated and arranged many proverbs.

10The Teacher sought to find delightful words, and to write accurately truthful sayings.

11The words of the sages are like prods, and the collected sayings are like firmly fixed nails; they are given by one shepherd.

12Be 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.