Does the soul exist?—This article talks about rational support for the existence of the soul via the existence of free will.
Epistemology
How do we know?—How do we know that the sources of our beliefs our ever reliable (e.g. memory, testimony, sense experience)? This web page deals with that very question, and you might be surprised at the answer.
Philosophy of Religion
What is God?—A brief introduction to some of the basic concepts of theism. It discusses God’s attributes and some basic objections (e.g. “Can God create a stone so heavy that He can’t lift it?”). It also introduces some classic arguments.
The Cosmological Argument—Concisely explains the cosmological argument, gives justifications and various points of dispute. This section is not yet complete (the scientific justification is incomplete, though one philosophical justification is described) but is still useful.
Basic Criticisms—Deals with a couple basic criticisms (“Can God create an immovable stone?”) and gives responses. The problem of evil is, I think, the most rational argument for atheism and I save that for another web page.
The Problem of Evil—How can a good God allow evil to exist in the world? This web page attempts to answer that very question and resolve the problem of evil.
Understanding the Ontological Argument—Proof of God’s existence! Or is it? You be the judge. This web page is a layperson’s introduction to Anselm’s famous ontological argument. It explains what it is, what it argues, how it is justified in addition to the objections and rejoinders of this argument. The justification methods it explains are the reductio ad absurdum and symbolic logic approaches. Not familiar with symbolic logic? Not to worry. This web page also gives you the basics needed to follow along.