Lewis on Time
It may have been C.S. Lewis, although I am not certain, who first introduced me to the question of the nature of time. In his well-known and popular book, Mere Christianity, Lewis mentions, almost in passing, that God's life almost certainly does not consist of moments following one another. He says, "All the days are 'Now' for Him." His point was that God does not have eras; he doesn't have history. All time is present to him. That's perhaps why in Lewis's The Lion, the Witch and the Wardrobe, Lucy could step through the wardrobe into Narnia, be in the wardrobe for less than a minute by her siblings' time, and claim she had been in Narnia for hours. There is a world not subject to a time system.
I think this idea, or at least this discussion about the temporal/non-temporal nature of time, is Aristotelian (time as the measurement of motion or change). Aristotle discussed the nature of time at length in Book 4 of his Physics. Augustine, in Book X of his Confessions, has an interesting but confusing (to me) discussion about time (not its nature), in which he addresses the question of how we can consistently speak about temporal being in a language primarily oriented to talk about permanent beings. He points out that the things we normally talk about as existing in time, despite their apparent permanence, are not at all permanent in their being.
What is temporal can be measured by time because it is subject to motion or change. What is eternal cannot be measured by time because, by definition, it is a permanent entity rather that a successive entity. The permanent doesn't have eras or history. All its days are "Now." Although such thinking may seem impractical, it is helpful in conceptualizing ideas beyond our temporal selves--heaven, hell, purgatory, eternity--and in concluding that only hubris prevents us from thinking about a world beyond our own.











The title of this post are the words of an Amazon reviewer of Professor David Benatar's recent Oxford Press book 




