As both developed and developing nations search for alternative sources of energy in response to the growing energy crisis, we at Acumen Fund believe that investing in entrepreneurs who provide innovative energy solutions is an increasingly critical part of the solution.

I think I still have a great sense of adventure and trust, and am surprisingly idealistic given all the horrible things I've seen since I was 25. I think how I have changed is that I have a much deeper understanding of the dark forces in the world, of power.

Even when early innovations start to succeed, it is not uncommon to see growing businesses sabotaged for threatening the status quo.

Impact investing has become a broad umbrella that includes all investing with a focus on both financial return and social impact, but in its best form, impact investing prioritizes impact over returns and achieves outcomes that traditional investing cannot.

There is a huge amount of wealth that's generated here in Silicon Valley.

We all - even at a base level, even a Republican - understand that the people with the money are the ones with the power. We all learn that.

No matter what your age, gender, politics, nationality, social or financial standing, every single person inhabiting the planet Earth has the same reaction to him: 'Holy crap, Buzz Aldrin, you went to the moon!'

The bottom-line message of history is that if you're doubling and tripling your money in record time, you're also more likely to lose it all.