We spend most of our lives cutting down our ambitions because the world has told us to think small. Dreams express what your soul is telling you, so as crazy as your dream might seem - even to you - I don't care: You have to let that out.

One way to express choice is through the market. Well-functioning markets provide choices and, ultimately, the ability to express one's pursuit for happiness.

Like its agriculture, Africa's markets are highly under-capitalized and inefficient. We know from our work around the continent that transaction costs of reaching the market, and the risks of transacting in rural, agriculture markets, are extremely high. In fact, only one third of agricultural output produced in Africa even reaches the market.

Nothing has brought me more love, joy and peace than being a good husband and good daddy.

Happiness can't start with external stuff, whether that's money or success or your body.

Liberty is to the collective body, what health is to every individual body. Without health no pleasure can be tasted by man; without liberty, no happiness can be enjoyed by society.

Three grand essentials to happiness in this life are something to do, something to love, and something to hope for.