I hope your surgery goes well.

And thanks for your review and the interaction, I hope we can continue to be in touch.

You ask about specific proofs rather than talk about method. My "Clarity" book only contains discussion of one proof (there must be something eternal), but is mostly about why a proof is necessary. For a full proof, see Surrendra Gangadean's "Philosophical Foundation." Let me know what you think of it.

I think you're right to warn young Christians to avoid "easy" approaches, but that's not the same as telling them that nothing is clear. What is clear may take work, but it is still clear. God is the rewarder of those that diligently seek Him.