Science makes no claim to infallibility; it leaves that claim to be made by theologians.

What a severe yet master artist old Winter is... No longer the canvas and the pigments, but the marble and the chisel.

One resolution I have made, and try always to keep, is this: ‘To rise above little things’.

The budget for nuclear forces in the United States is on the order of $25 billion or so. That includes warheads, delivery systems, command and control; does not include environmental clean-up, which is another maybe $10 billion or so. So that's about 5% of the U.S. military budget.

Look up at the miracle of the falling snow,—the air a dizzy maze of whirling, eddying flakes, noiselessly transforming the world, the exquisite crystals dropping in ditch and gutter, and disguising in the same suit of spotless livery all objects upon which they fall.

[Invading Iraq] is not the best way to make a safer world in which the United States would be a responsible partner, but it also goes against the role of law in the United States.

There tends to be this comfortable assumption that nuclear weapons won't be used, but I don't think that's warranted, and I think we should seize the opportunity of this time of stability and cooperation and move towards global elimination of nuclear weapons as indeed people like Henry Kissinger, and William Perry, former Secretary of Defense under Clinton, and Sam Nunn, former Senator, and George Schultz, former Undersecretary of State for Ronald Reagan. All of them recently called for achievement of a nuclear weapon-free world.