Evidence suggests reading can improve intelligence and lead to innovation and insight. Some studies have shown, for example, that reading makes you smarter through “a larger vocabulary and more world knowledge in addition to the abstract reasoning skills.” Reading — whether Wikipedia, Michael Lewis, or Aristotle — is one of the quickest ways to acquire and assimilate new information. Many business people claim that reading across fields is good for creativity. And leaders who can sample insights in other fields, such as sociology, the physical sciences, economics, or psychology, and apply them to their organizations are more likely to innovate and prosper.

Reading can also make you more effective in leading others. Reading increases verbal intelligence (PDF), making a leader a more adept and articulate communicator. Reading novels can improve empathy and understanding of social cues, allowing a leader to better work with and understand others — traits that author Anne Kreamer persuasively linked to increased organizational effectiveness.

Finally, an active literary life can make you more personally effective by keeping you relaxed and improving health.