The ontological argument for the existence of God is often greeted with skepticism by atheists and theists alike. I don’t want to talk about particular versions of the argument, but about why people are suspicious of them. It seems to me that we are quite ready to accept ontological arguments in other areas.So, consider geometry. Why can’t there be any square circles? Because the very concept is contradictory. We infer from this that reality must be a certain way; it contains no square circles. Isn’t the basic strategy behind the ontological argument for God the same? Why must there be a God? The concept of God’s non-existence is contradictory. Infer from that that reality must be a certain way. Now, I don’t mean to be saying that the ontological argument is a good argument or not. I only mean to point out that ontological arguments aren’t as strange as they seem.