Mecclesiastes

Futile. As a function of time, you are dying and you will die. All will be lost. Your possessions, thoughts, works, the dust of your bones, and all memory of you will be scattered,  dissipated, will fade out, rot, disintegrate, return to elementality and nothingness. Your utter insignificance and meaninglessness should not, however, be permitted to incite desperation or madness. Cause no harm. Respect your life, the lives of others, and all life in the Terran biosphere. Be happy, Be content, While you live and while you can.