One is: Read This Book
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It has changed my life, and I'm reading it for a second time, and it is once again changing my life.
The second is: Read books more than once. There is always something more to learn from a sentence you've already read.
The 3rd is: Never forget that beauty doesn't exist independently, but only points us to something that is truly beautiful. (Learned from doing steps 1 and 2)