Eventually there are more ripe fruits which proceed to fall, rot, sink into the ground as seeds and grow once more into trees. This is how the world is. It doesn't go very far, it just revolves around the same old things. Our lives these days are the same. Today we are simply doing the same old things we've always done.
People think too much.
There are so many things for them to get interested in, but none of them leads to completion. There are the sciences like mathematics, physics, psychology and so on. You can delve into any number of them but you can only finalize things with the truth. Suppose there was a cart being pulled by an ox. The wheels aren't long, but the tracks are.