9 Big Idea Business Books You Need to Read Now

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2. "Start With Why" by Simon Sinek.

All companies exist to make money. What separates yours from all the rest? Why does it exist--what is its transcendent, inspirational purpose--over and above profitability? Sinek's book can help you formulate these questions and articulate the answers. "The biggest takeaway from the book is, as Senek says, 'People don't buy what you do they buy why you do it,'" says Zach Kaplan, CEO of Inventables, a Chicago-based startup that provides software, supplies and machinery to digital designers and manufacturers. "His book and his TED talk on the same topic caused me to think hard about why we exist at Inventables."