"I'm a scientist, not a theologian. I don't know if there is a God or not. Religion requires certainty"

This quote by James Lovelock talks to the divide in between science and faith. As a researcher, Lovelock is concentrated on truths and evidence, and is not able to provide certainty about the presence of God. Faith, on the other hand, needs certainty in order to be practiced. This quote highlights the difficulty of fixing up the two, as science and religious beliefs frequently have various ways of looking at the world. Lovelock is unable to offer a conclusive response to the question of God's presence, as it is beyond the world of science. This quote works as a tip that science and religious beliefs are 2 distinct ways of understanding the world, and that certainty is not constantly possible.