The library: on the hundreds of metal bookshelves, now shoved flush against the wood paneling and the floor-to-ceiling windows, the ten thousand volumes now gathering dust in low light contain all the usual products of human thought.
In the Classics section, a visitor could read about the oracles of ancient Greece and Rome, how the people of those eras believed that dreams could sometimes reveal the future.
One floor down, in the Psychology section, one might eventually discover that Carl Jung, at a certain point in his life, became convinced that he had dreamed of his wife many years before he met her.
On another part of that same floor, in Philosophy, one could entertain the theory that if you could truly understand the complexity of reality, you could also accurately predict the future, since every moment of the future is set in motion by the events of the past—the whole system simply too complex for the human mind to model.
Upstairs, in Physics, one could find journal articles theorizing that the concepts of past, present, and future are artificial constructs, that in fact all three may exist at once, simultaneously, in different dimensions.
In Linguistics, one would find a similar intuition reflected in the grammar of certain languages. In Mandarin, for example, verbs operate entirely in the present tense. There is no special tense for the past or the future.
Time, said Saint Augustine, exists only in the mind.
But no one is reading any of the books in this library. At least one slim hardcover is right now being used to stabilize a wobbly army cot, where a small boy lies sleeping alongside a hundred other sick in the cavernous main reading room.
And even if one were to read every book in these stacks, certain mysteries would persist.
Think of William James, one floor down, back in Philosophy, who once compared any attempt to study human consciousness to turning on a lamp in order to better examine the dark.