The world's most successful entrepreneurs play hard, but they work even harder.

What can we learn from the battle between data and design? What can we learn from the relationship between Google and Apple? Clearly no one school of thought is right: Apple and Google are both wildly successful and profitable companies that changed the world.

Building a successful company (or living a happy life, for that matter) is not about embracing someone else's philosophy, but staying true to your own beliefs about the world and learning from the mistakes you make along the way.

Entrepreneurs may be brutally honest, but fostering relationships with partners and building enduring communities requires empathy, self-sacrifice and a willingness to help others without expecting anything in return.

Point-to-point transit via low orbit could dramatically speed up international flights, connecting the world even further. And safe, consistent space travel opens up the possibility of commercial space stations, trips to the moon and exploration beyond.

These times are so hard, and they're getting even harder.