At this point there are only 3 things certain:
1. The shadows get longer toward the end of day.
2. We came out of the earth, and the earth came out of the sun.
3, We will go back into the earth, just as the earth, after uncountable aeons during which homo sapiens are long departed, will go back into ye sunne.
In addition to these 3 certainties, there is also a certainty behind those others, to wit:
-0-, if there is an intelligence, force, power, or other sort of "thing"'at large in this world and behind the creation of it, there's only one of her.