The universe is no narrow thing and the order within is not constrained by any latitude in its conception to repeat what exists in one part in any other part. Even in this world more things exist without our knowledge than with it and the order in creation which you see is that which you have put there, like a string in a maze, so that you shall not lose your way. For existence has its own order and that no man’s mind can compass, that mind itself being but a fact among others.
On its own, it is a wonder, but viewed in isolation its complexity and very existence is inexplicable. Darwin’s genius was to see that the existence of something as magnificent as a blade of grass can be understood, but only in the context of its interaction with other living things and, crucially, its evolutionary history. A physicist might say it is a four-dimensional structure, with both spatial and temporal extent, and it is simply impossible to comprehend the existence of such a structure in a universe governed by the simple laws of physics if its history is ignored.
And whilst you are contemplating the humble majesty of a blade of grass, with a spatial extent of a few centimeters but stretching back in the temporal direction for almost a third of the age of the Universe, pause for a moment to consider the viewer, because what is true of the blade of grass is also true for you. You share the same basic biochemistry, all the way down to the detail of proton waterfalls, and ATP, and much of the same genetic history, carefully documented in your DNA. This is because you share the same common ancestor. You are all related. You were once the same.