From the desk of Mr. Monk

A famous analogy is to ask a person who believes in God, “can God do everything?” If the answer is no, then there is something impossible for God. If the answer is yes, then inquire, “can God can make a rock.” If the answer is no, then there is an impossiblity. If the answer is yes, then ask one more question, “can God build a rock bigger than he can lift?” A “yes” answer means that God can not lift every rock (there’s your impossibility). A “no” answer means that God can lift every rock, but it is impossible for God to make a rock bigger than he can lift. Either way, you have an impossible set of circumstances.