I have also been touched by the dark side of power and leadership.

Your job is not to be perfect, your job is only to be human.

May each of you live lives of immersion. They won't necessarily be easy lives. But in the end, it is all that will sustain us.

Sometimes the most important things that we do are things we cannot measure.

We can send people to the Moon; we can see if there's life on Mars - why can't we get $5 [mosquito] nets to 500 million people?

The only way we really create change is to enter any situation with the humility to listen and to recognize the world as it is, and then the audacity to dream what it could be.

The time for change is now.

Dignity is more important to the human spirit than wealth.

My dream is to find individuals who take financial resources and convert them into changing the world in the most positive ways.

Why do some people stop growing at age 30, just going from work to the couch and television, when others stay vibrant, curious, almost childlike into their nineties?

Poverty is not only about income levels, but for lack of freedom that comes from physical insecurity

Quit hating and trying be like the next man. Get on your own grind & be better than the next man, whether you gotta hustle, work a job or whatever just do you.

Never underestimate the power of telling a teenage boy he's risking his chances of getting laid. Works almost every time.

How many whales do we really need? I figure five. One for each ocean.

Do not wonder if the common people speak more truly than those above them: they speak more safely.

Should; shouldn't; ought; oughtn't—the enemies of contentment.

... the agent provocateur of a good dinner.

The electron is a theory we use; it is so useful in understanding the way nature works that we can almost call it real.

To solve a problem it is necessary to think. It is necessary to think even to decide what facts to collect.

I am primarily an oil painter and a studio painter, so originally I was going to do an oil painting.

I will not avoid doing what I think is right, though it should draw on me the whole artillery that falsehood and malice can invent, or the credulity a deluded population can swallow.