Scott Duncan
I'm not entirely sure how to answer that.
I can only tell you what I read, and what it taught me.
The Foundation Trilogy - Isaac Asimov
This will show you how to think on a grand scale while controlling immediate details.
Time Enough For Love - Robert Heinlein
This will teach you to think right and value the right things. I model much of my life inspired by the protagonist of this book.
A Demon Haunted World: Science as a candle in the dark - Carl Sagan
This will teach you to question everything. It is the gateway to...
God is Not Great: How religion poisons everything - Christopher Hitchens.
This will teach you how adults with imaginary friends are responsible for EVERYTHING wrong today. It's not hyperbole when he says "Religion POISONS EVERYTHING". It will anger you.
The Prince - Niccol� Machiavelli
This will teach you how to exploit lawyers. It will teach you that people not in power will do all they can to acquire it, and people in power will do all they can to keep it
The Art of War - Sun Tzu
Tactical decisions for the long term. It will also show you that the act of killing your fellow Man, can be raised to an art.
The System of the World - by Isaac Newton
This will show you that the universe is a knowable place.
The Wealth of Nations - Adam Smith
This will teach you that capitalism is an economy of greed, and how to avoid the pitfalls.
The Bible - Piece-of-Shit Christians
Read it cover-to-cover. You will be an atheist for life. It's the fastest way. Piece-of-Shit Christians never do this, for that reason.