It is easy to forget, since the Catholic Church is now the only large American religious denomination whose ecclesiastical hierarchy continues to oppose birth control, that only a century ago the leaders of nearly all churches were united in their resistance to any public discussion of the subject.

I can no more imagine falling in love with someone who believed that than I can imagine falling in love with someone who believes that blacks shouldn't be able to vote and are inferior to whites.

I wanted to know how much of conversion was forced - that is, forced in the sense that the Inquisition forced people to choose - forced Jews, let's say, and Muslims to choose conversion to Christianity or death. I wanted to see how much of conversion historically was forced in that way and how much of it was really a kind of persuasion.

Feminists who want to censor what they regard as harmful pornography have essentially the same motivation as other would-be censors: They want to use the power of the state to accomplish what they have been unable to achieve in the marketplace of ideas and images. The impulse to censor places no faith in the possibilities of democratic persuasion.

Too many Americans have twisted the sensible right to pursue happiness into the delusion that we are entitled to a guarantee of happiness. If we don't get exactly what we want, we assume someone must be violating our rights. We're no longer willing to write off some of life's disappointments to simple bad luck.

If you believe in what I do, which is secular humanism, I would find it extremely difficult to live with someone - not to love someone - but to live with somebody and build a life of someone who disagreed with me on something so fundamental.

We do want our fellow citizens to respect our deeply held conviction that the absence of an afterlife lends a greater, not a lesser, moral importance to our actions on earth.