The Tahafut and the Philosophy of God

Ar-Kazali argues that a temporally limited effect cannot come from an eternal cause. If nothing at all exists, then what could lead God to choose one moment rather than another for the universe to begin? Something must change to make the moment he chooses be the right moment for him to create. Ar-Kindi mentions only Plato and Galen as exceptions to the supposedly universal philosophical belief in eternity.