Greg has written Creation and Last Things: At the Intersection of Theology and Science on Christian faith in light of contemporary scientific discoveries and Say Yes to No: Using the Power of No to Create the Best in Life, Work and Love. Greg has a literature degree from U.C. Berkeley, a Master of Divinity from Princeton Seminary, and a Ph.D. in theology from the Graduate Theological Union. Greg and his wife, Laura, live in Chico with their two daughters.