| Re: If you had to recommend ONE book...
Nope. You can be wrong (eg if you make an unrealistic assumption, but still be entirely genuine.
Proofs of God's existence could be spurious; faith in God's existence could not be*, even if it's based on having seen a really big fish one time that couldn't possibly have evolved to that size. The reasoning contains fallacies but the faith is real, genuine, authentic faith.
*Well obviously you could claim to have faith in God's existance but not actually believe in God, but you know what I mean.
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