Atheism

Remember

The first thing you need to ask an atheist is "do you really seek to discover the truth - even if it costs you your reputation, and even your friends?" If the answer is no, then realize that he/she is not willing to go where the evidence leads; you won't be having an honest intellectual dialogue, but your conversation may still have a spiritual impact.
Don't talk about sin with an atheist. In their worldview, morality is generally dependent on the situation and neutral, so there is no reference point in their minds for a concept of breaking God's universal laws.
Don't get dragged into arguments about what God did or didn't do. Focus on the evidence that Christ existed, died on the cross, and came back from the dead. As well, your personal testimony can be a powerful tool, because it's very difficult to 'disprove' the real and lasting change that Christ has brought to your life.
Bottom line with an atheist (or anyone else for that matter) - you cannot argue someone to faith in Christ, but you can (and should) live such a Christlike life that those around you sense something different, which opens the door for you to explain the 'evidence'.

Basics

Atheism is defined as "not having a 'god belief'." This is important to remember, because it's not that an atheist doesn't believe in god, because that statement opens the possibility that god or a supreme being exists. The atheist's worldview is driven by pure rationality, reason, and the scientific method. The result of this is that most atheists hold the theory of evolution to be true, and they reject the possibility of the spiritual world and an afterlife. Most surveys show that around 15% of Americans call themselves atheist.

Beliefs

Andy believes that atheism is the most rational and reasonable worldview, sometimes because of the 'damage' done by religion throughout the centuries, but mainly because it seems to be the most consistent with the observable world according to the scientific method.

About God

Andy lacks a 'god belief'.

About Jesus

Andy believes Jesus was either just an ordinary person, or never existed at all. He will oftentimes refer to the 'Jesus-Myth', or when he is being really sarcastic, refers to 'Jebus' (a sarcastic reference to Christ).

About trinity

Since Andy lacks a 'god belief', the concept of the Trinity is totally irrelevant.

About afterlife

Andy does not believe in an afterlife.

About salvation

In Andy's mind, there is no need for salvation from sin and hell. He doesn't believe in sin, and he doesn't believe in hell, so why does anyone need to be 'saved'?

About Scripture

Andy believes the Bible is a collection of myths, half-truths, and lies designed to lead ignorant people astray and give power to religious leaders over the masses.