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.

Happiness isn't a position. It's a trajectory.

Unhappiness is something we are never taught about; we are taught to expect happiness, but never a Plan B to use to use when the happiness doesn't arrive.

We tend to think that employment is employment, and we don't ask the question: is this rewarding employment? Research establishes pretty clearly that typical notions of happiness - that more is better - really don't correspond to the way people think and feel.

None of us get to divorce ourselves from the world. We walk into the theater and bring all of our grief and our pain and our joy with us.