He inscribed His signature within each thing He made. On the outside each thing is finite, but on the inside you will find the signature of infinitude.
Open anything you like, examine it carefully and you will see. A puddle of water, a grain of sand, a splotch of mud on the wall. There is nothing that does not contain endless wonders. Nothing that could not involve a lifetime of study.
Because all of them He made with His infinite wisdom.