"The question of whether America is in decline cannot be answered yes or no. There is no yes or no. Both answers are wrong, because the assumption that somehow there exists some predetermined inevitable trajectory, the result of uncontrollable forces, is wrong. Nothing is inevitable. Nothing is written. For America today, decline is not a condition. Decline is a choice. Two decades into the unipolar world that came about with the fall of the Soviet Union, America is in the position of deciding whether to abdicate or retain its dominance. Decline — or continued ascendancy — is in our hands."

“Courage is not a quality one normally associates with mathematicians. Yet it should apply to people who work in their attics in secret for seven years without cease on a problem that has eluded the greatest mathematical minds since first proposed in 1637.”

“Science has everything to say about what is possible. Science has nothing to say about what is permissible.”

“When under attack, no country is obligated to collect permission slips from allies to strike back.”

“In an essay 10 years ago, I pointed out that it is utterly logical for polygamy rights to follow gay rights. After all, if traditional marriage is defined as the union of two people of opposite gender, and if, as advocates of gay marriage insist, the gender requirement is nothing but prejudice, exclusion and an arbitrary denial of one's autonomous choices in love, then the first requirement — the number restriction — is a similarly arbitrary, discriminatory and indefensible denial of individual choice.”

“Affluent enviros are all for wind farms, until one is proposed that might mar the serenity of a sail from the crew-necked precincts near Nantucket Sound. Then it's clean energy for thee, not for me.”

“In explaining any puzzling Washington phenomenon, always choose stupidity over conspiracy, incompetence over cunning. Anything else gives them too much credit.”