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" My claim is that if there is no God, then meaning, value, and purpose are ultimately human illusions. They’re just in our heads. If atheism is true, then life is really objectively meaningless, valueless, and purposeless, despite our subjective beliefs to the contrary. This point is worth underscoring, since it’s so frequently misunderstood. I’m not saying that atheists experience life as dull and meaningless, that they have no personal values or lead immoral lives, that they have no goals or purpose for living. On the contrary, life would be unbearable and unlivable without such beliefs. But my point is that, given atheism, these beliefs are all subjective illusions: the mere appearance of meaning, value, and purpose, even though, objectively speaking, there really isn’t any. If God does not exist, our lives are ultimately meaningless, valueless, and purposeless despite how desperately we cling to the illusion to the contrary. "
― William Lane Craig , On Guard: Defending Your Faith with Reason and Precision
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" But apart from examining the arguments for and against God, how can the atheist justifiably make such an accusation? How does he know that God does not exist? Shouldn’t we at least look at the evidence? That is surely correct. Some philosophers have even argued that if the evidence for these two options were absolutely equal, a rational person ought to choose to believe in God. That is, if the evidence is equal, it seems positively irrational to prefer death, futility, and destruction to life, meaningfulness, and happiness. As Pascal said, we have nothing to lose and infinity to gain. But my aim in this chapter is more modest than that. I only hope to have gotten you to think about these issues, to realize that the question of God’s existence has profound consequences for our lives and that therefore we cannot afford to be indifferent about it. What I’ve at least done is to clearly spell out the alternatives. If God does not exist, then life is futile. If God does exist, then life is meaningful. Only the second of these two alternatives enables us to live happily and consistently. Therefore, it makes a huge difference whether God exists, a difference we should care about. Who cares? You should. "
― William Lane Craig , On Guard for Students: A Thinker's Guide to the Christian Faith