This discussion is based off of my essay on the Cosmological Argument.
Here is the basic form of the argument:
Whatever begins to exist, has a cause.
The universe began to exist.
Therefore the universe has a cause.
This is a logically valid argument; meaning, if the first two premises are true, then the conclusion logically follows.
From this argument it can be reasoned that the cause of the universe is:
*See essay for full argument