scholar at the Katholieke Universiteit Leuven (Louvain) in Belgium until 1994. At that time, Craig joined the Department of Philosophy and Ethics at Talbot School of Theology in suburban Los Angeles as a research professor of philosophy, a position he currently holds, and he went on to become a professor of philosophy at Houston Baptist University in 2014. In 2017, Biola University created a permanent faculty position and endowed chair, the William Lane Craig Endowed Chair in Philosophy, in honor of Craig's academic contributions. Craig served as president of the Philosophy of Time Society from 1999 to 2006. He helped revitalize the Evangelical Philosophical Society and served as its president from 1996 to 2005. In the mid-2000s, Craig established the online Christian apologetics ministry ReasonableFaith.org. Philosophical and theological views Kalam cosmological argument Craig has written and spoken in defense of a version of the cosmological argument called the Kalam cosmological argument. While the Kalam originated in medieval Islamic philosophy, Craig added appeals to scientific and philosophical ideas in the argument's defense. Craig's work has resulted in contemporary interest in the argument, and in cosmological arguments in general. Craig formulates his version of the argument as follows: Everything that begins to exist has a cause of its existence. The universe began to exist. Therefore, the universe has a cause of its existence. Craig's defense of the argument mainly focuses on the second premise, which he offers several arguments for. For example, Craig appeals to Hilbert's example of an infinite hotel to argue that actually infinite collections are impossible, and thus the past is finite and has a beginning. In another argument, Craig says that the series of events in time is formed by a process in which each moment is added to history in succession. According to Craig, this process can never produce an actually infinite collection of events, but at best a potentially infinite one. On this basis, he argues that the past is finite and has a beginning. Craig also appeals to various physical theories to support the argument's second premise, such as the standard Big Bang model of cosmic origins and certain implications of the second law of thermodynamics. The Kalam argument concludes that the universe had a cause, but Craig further argues that the cause must be a person. First, Craig argues that the best way to explain the origin of a temporal effect with a beginning