The first chapter of the second part is called "The Clues of God".
Though there cannot be irrefutable proof for the existence of God, many people have found strong clues for his reality - divine fingerprints - in many places.
The mysterious bang
Those of a more rational mind-set have always been fascinated by the question "Why is there something rather than nothing?". Something had to make the Big Bang happen - but what? However, even if we accept that our universe simply had to be created by an intelligent being, this would not suggest that this being is necessarily the God of the Bible. That is right. If we are looking at this as an argument proving the existence of a personal God, it doesn't get us all the way there. However, if we are looking for a clue - a clue that there is something besides the natural world - it is very provocative for many people.
The Cosmic Welcome Mat
For organic life to exist, the fundamental regularities and constants of physics - the speed of light, the gravitational constant, the strength of the weak and strong nuclear forces - must all have values that together fall into an extremely narrow range. This has been called the "fine-tuning argument". Some have argued that we are just by random accident in one of many different universes in which organic life occurred. Though you could not prove that the fine-tuning of the universe was due to some sort of design, it would be unreasonable to draw the conclusion that it wasn't. Although organic life could have just happened without a Creator, does it make sense to live as if that infinitely remote chance is true?
The Clue-Killer
In our culture there is a very influential school of thought that claims to have the answers to all of these so-called clues. This is the school of evolutionary biology that claims everything about us can be explained as a function of natural selection. Dawkins and others admit that since we are the product of natural selection we can't completely trust our own senses. In other words, paranoid false beliefs are often more effective in helping you survive than accurate ones. I don't believe Dawkins or other evolutionary theorist realise the full implications of this crucial insight. Evolution can only be trusted to give us cognitive faculties that help us live on, not to provide ones that give us an accurate and true picture of the world around us. Hence, according to evolutionary biology, laws of reason would have to make sense to us only because they help us survive, not because they necessarily tell us truth.
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Of course, none of the clues we have been looking for actually proves God. Every one of them is rationally avoidable. However, their cumulative effect is, I think, provocative and potent. The theory that there is a God who made the world accounts for the evidence we see better than the theory that there is no God. Those who argue against the existence of God go right on using induction, language and their cognitive faculties, all of which make far more sense in a universe in which a God has created and supports them all by his power.
Based on: Keller, T. (2008). The Reason For God. p.127-142
