Quincy, Mass.

THE Republican presidential field has become a showcase of evangelical anti-intellectualism. Herman Cain, Rick Perry and Michele Bachmann deny that climate change is real and caused by humans. Mr. Perry and Mrs. Bachmann dismiss evolution as an unproven theory. The two candidates who espouse the greatest support for science, Mitt Romney and Jon M. Huntsman Jr., happen to be Mormons, a faith regarded with mistrust by many Christians.

The rejection of science seems to be part of a politically monolithic red-state fundamentalism, textbook evidence of an unyielding ignorance on the part of the religious. As one fundamentalist slogan puts it, “The Bible says it, I believe it, that settles it.” But evangelical Christianity need not be defined by the simplistic theology, cultural isolationism and stubborn anti-intellectualism that most of the Republican candidates have embraced.

Like other evangelicals, we accept the centrality of faith in Jesus Christ and look to the Bible as our sacred book, though we find it hard to recognize our religious tradition in the mainstream evangelical conversation. Evangelicalism at its best seeks a biblically grounded expression of Christianity that is intellectually engaged, humble and forward-looking. In contrast, fundamentalism is literalistic, overconfident and reactionary.

Fundamentalism appeals to evangelicals who have become convinced that their country has been overrun by a vast secular conspiracy; denial is the simplest and most attractive response to change. They have been scarred by the elimination of prayer in schools; the removal of nativity scenes from public places; the increasing legitimacy of abortion and homosexuality; the persistence of pornography and drug abuse; and acceptance of other religions and of atheism.