Of course, hopefulness beyond reason is simply ignorance. But I've found there is rarely no reason at all for hope, in the end. I've lived through several moments where all seemed lost, and often found something that gave me hope. It was not always what I had thought I wanted beforehand, but it was hope, and it was what I needed.
If there is nothing definite to hope for, then there is the future.
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If there is nothing definite to hope for, then there is the future.