I like the story about the Scientist who became so enamored of the great strides in the scientific body of knowledge that he knew that with a few tweaks here and there man could create life from the very elements of the earth.
He was so confident that he challenged God saying, “I, too can create life. Meet me at a certain place at a certain hour and we will compete.
And God being a patient God, agreed and when they both appeared at the certain place at the certain time the exuberant scientist began immediately by scooping up a handful of earth to extract the necessary elements.
But God objected, raised his great hand and said, “My dear boy, you must bring your own dirt.”