The anniversary of Hiroshima, should be a day of somber reflection, not only on the terrible events of that day in 1945, but also on what they revealed: that humans, in their dedicated quest to extend their capacities for destruction, had finally found a way to approach the ultimate limit.

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The very properties of the human mind that provide an enormous scope for human genius in some domains will serve as barriers to progress in other domains, just as the properties that enable each child to acquire a complex and highly articulated human language block the acquisition of other imaginable linguistic systems.

In fact, there is a very close correlation between human rights violations and US aid, particularly in Latin America.

There are a lot of things that can be done within the framework of existing institutions which would be very valuable for people.

There is a noticeable general difference between the sciences and mathematics on the one hand, and the humanities and social sciences on the other. It's a first approximation, but one that is real. In the former, the factors of integrity tend to dominate more over the factors of ideology. It's not that scientists are more honest people. It's just that nature is a harsh taskmaster. You can lie or distort the story of the French Revolution as long as you like, and nothing will happen. Propose a false theory in chemistry, and it'll be refuted tomorrow.

The more privilege you have, the more opportunity you have. The more opportunity you have, the more responsibility you have.