Ecclesiastes 12:11-13

11The sayings of the wise are like cattle prods, and those from masters of collections are like firmly embedded nails. The sayings are given by one Shepherd.

12But beyond these, my son, be warned: there is no end to the making of many books, and much study wearies the body.

13When all has been heard, the conclusion of the matter is this: fear God and keep his commands, because this is for all humanity.