“The first question that should rightly be asked is, ‘Why is there something rather than nothing?'” This is the question Gottfried Wilhelm Leibniz (1646-1716) posed in regards to the origin of the universe as a part of his argument for the existence of God.
Here is a brief and simplified explanation of what has come to be known as the Leibniz Contingency Argument, or the Leibniz Cosmological Argument (cosmology being the study of the origin of the cosmos, or universe).
The logic of the argument goes like this:
1. Everything that exists has an explanation of its existence.
2. If the universe has an explanation of its existence, that explanation is God.
3. The universe exists.
4. Therefore, the explanation of the universe’s existence is God.
As with all such logical arguments, if the premises are true (points 1-3), than the conclusion must be true (point 4). The question is whether or not the first three points or more likely to be true than they are false.