Kenneth Raymond Miller is an American cell biologist and molecular biologist who is currently Professor of Biology and Royce Family Professor for Teaching Excellence at Brown University. Miller's primary research focus is the structure and function of cell membranes, especially chloroplast thylakoid membranes. Miller is a co-author of a major introductory college and high school biology textbook published by Prentice Hall since 1990. Miller, who is Roman Catholic, is opposed to creationism, including the intelligent design (ID) movement. He has written two books on the subject: Finding Darwin's God, which argues that acceptance of evolution is compatible with a belief in God; and Only a Theory, which explores ID and the Kitzmiller v. Dover Area School District case as well as its implications in science across America.