Ecclesiastes 12:11-14

The words of wise men are like goads, and masters of these collections are like well-driven nails; they are given by one Shepherd. But beyond this, my son, be warned: the writing of many books is endless, and excessive devotion to books is wearying to the body. The conclusion, when all has been heard, is: fear God and keep His commandments, because this applies to every person. For God will bring every act to judgment, everything which is hidden, whether it is good or evil.