Ecclesiastes 11:7-10

[7] Light is sweet, and it is pleasant for the eyes to behold the sun.
[8] For if a man lives many years, let him rejoice in them all; but let him remember that the days of darkness will be many. All that comes is vanity.
[9] Rejoice, O young man, in your youth, and let your heart cheer you in the days of your youth; walk in the ways of your heart and the sight of your eyes. But know that for all these things God will bring you into judgment.
[10] Remove vexation from your mind, and put away pain from your body; for youth and the dawn of life are vanity.