"If you ask me today, is it possible to live to be 500? The answer is yes," Bill Maris says one January afternoon in Mountain View, California. The president and managing partner of Google Venturesjust turned 40, but he looks more like a 19-year-old college kid at midterm. He's wearing sneakers and a gray denim shirt over a T-shirt; it looks like he hasn't shaved in a few days.

Behind him, sun is streaming through a large wall of windows. Beyond is the leafy expanse of the main Google campus. Inside his office, there's not much that gives any indication of the work Maris does here, Bloomberg Markets will report in its April 2015 issue. The room is sparse—clean white walls, a few chairs, a table. On this day, his desk has no papers, no notepads or Post-its, not even a computer.

Here's where you really figure out who Bill Maris is: on his bookshelf. There's a fat text called Molecular Biotechnology: Principles and Applications of Recombinant DNA. There's a well-read copy of Biotechnology: Applying the Genetic Revolution. A