Adam Ferguson (Institutes of Moral Philosophy, p. 119, new ed., 1800) argues that " the desire for immortality is an instinct, and can reasonably be regarded as an indication of that which the author of this desire wills to do."
In his Theodicy Leibnitz argues, like not a few predecessors, that this universe must be regarded as the best of all possible universes.
He nowhere formally argues for the truth of theism.
Ultimately, he argues, if not immediately, there must be a rational cause to account for so rational an effect.
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