I look at nature: how the sun and rain draw the tiny green shoot upward from the earth into the air, finally to become an oak tree. I look at the incredible complexity of life. The life-giving sun.
I look at this full-stop. I consider that it contains 20 million atoms, each of which consists of a nucleus the size of a pea in the middle of a football field with pin-prick electrons clouding it -- all the different types of atoms, and the incredible laws and forces that maintain them. That make up all the world and all the universe.
I look up and see the stars of our milky way galaxy: 100 billion stars. I look at the beautiful Hubble images of the cosmos -- incredible supernovae, creating the atoms of the elements. I look at the Hubble deep-field image, of galaxies receding into infinity, beyond where the light from others can ever reach us.
At least 100 billion galaxies visible, each containing at least 100 billion stars. And other galaxies, who knows how many -- forever expanding outward -- that we will never be able to see.
I consider the Big Bang, from which time and space and all the energy and all the forces that govern energy were born, from a point infinitely smaller than an atomic nucleus.
I consider the power of the human mind, science capable of detecting gravity waves generated by supermassive black holes combining zillions of light years away, with instruments measuring the equivalent change in spacetime of a feather falling onto an oil tanker. Unravelling the laws of the infinite cosmos.
And I know there is a God.