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And I hope you will come back here to Harvard 30 years from now and reflect on what you have done with your talent and your energy. I hope you will judge yourselves not on your professional accomplishments alone, but also on how well you have addressed the world's deepest inequities…on how well you treated people a world away who have nothing in common with you but their humanity.

Leaders must have the courage to make tough decisions for long-term benefits, even if they are unpopular in the short term.

I'm not a creature of your government's creation.

Global food challenges require local solutions with global perspectives.

Collaboration across borders isn't optional in ocean conservation—it's imperative.

History is that certainty produced at the point where the imperfections of memory meet the inadequacies of documentation.

"Writing is a form of therapy; sometimes I wonder how all those who do not write, compose, or paint can manage to escape the madness, melancholia, the panic and fear which is inherent in a human situation."