But the fool on the hill
Sees the sun going down
And the eyes in his head
See the world spinning round

To be the best, most complete fool you can be, follow these steps faithfully, in the proper order

1. Read voraciously, everything you can get your hands on, sacred or profane, it doesn’t matter, just be a sponge.
2. Apply your best critical thinking skills to separate the wheat from the chaff.
3. Seek out the most knowledgeable people in every field, make their acquaintance, and don’t be shy about disagreeing with them.
4. Examine the world’s religions, from the simplest animism to the most convoluted monotheism.  Talk to both believers and infidels, converts and apostates.
5. Travel as extensively as possible, “trying on” various cultures, sorting through the good and the bad aspects of each.
6. Avoid making pronouncements about your conclusions, realizing your remarks will be misinterpreted at best, and turned to evil ends at worst.
7. Having done all of that, isolate yourself from others, to avoid contamination of your insights.
8. Practice deep meditation and introspection.
9. Realize that after a lifetime of learning and accumulating wisdom, you have shared all of this with no one, from a false modesty arising from a deep-seated fear of being wrong.
10. Die.