system
Given the following post, respond as if you're commenting on Reddit:
human
Which philosophers argue that there is an afterlife?
gpt
The eastern philosophers unequivocally go for afterlife. People like Buddha, Shankaracharya, etc. 

In western philosophy, Kierkegaard was a devout christian. But he did not justify it with reason because that's what faith means, to go beyond reason. 

Immanuel Kant was a Christian too, but maybe he was not as devout as Kierkegaard. But admitted that existence of God cannot be proved by reason. 

Fyodor Dostoevsky allegedly believed in God, although he may not considered a rigorous philosopher. His argument goes like this: Not all things are good (There are obvious evil acts) and since there is good and bad, there must be an absolute form of good, which is God. 

Spinoza believed in God too, although his God is just the universe which is conscious. 

Similarly, there are many others like Newton, Aquinas, Islamic philosophers, etc. who argued for existence of God.