Existence is the most profound mystery of all. It is scientifically explainable from the instant (a few trilliants of a second after it happened when our laws of physics came into play), but there is no way to understand why it happened nor why it happened in the manner it did. The fact that it was on the order of 11 billion years ago doesn't matter since the universe has as much time as it needs. Why it happened is amazing in that it leads to the evolution of life with brains of such stunning capability. Our brains have now looked back, described and explained the evolution from the singularity and further to the evolution of our brains. We may, however, after a staggering amount of work, many Noble prizes, either know how life began or are on the edge. A hint of the complexity is the image below of a single human cell.