There is an optimism which nobly anticipates the eventual triumph of great moral laws, and there is an optimism which cheerfully tolerates unworthiness.
Progress is Providence without God. That is, it is a theory that everything has always perpetually gone right by accident. It is a sort of atheistic optimism, based on an everlasting coincidence far more miraculous than a miracle.
But the nearer the dawn the darker the night, And by going wrong all things come right. Things have been mended that were worse, and the the worse, the nearer they are to mend.
Most of us stand poised at the edge of brilliance, haunted by the knowledge of our proximity, yet still demonstrably on the wrong side of the line, our dealings with reality undermined by a range of minor yet critical psychological flaws (a little too much optimism, an unprocessed rebelliousness, a fatal impatience or sentimentality). We are like an exquisite high-speed aircraft which for lack of a tiny part is left stranded beside the runway, rendered slower than a tractor or bicycle.