The idea of a law of progress, or of an all but irresistible tendency to general improvement, is then merely a superstition, one of the tents of the modernist pseudo-religion of humanism. Even if such a law or tendency existed and were demonstrable, the liberal faith in progress would for Santayana be pernicious. For it leads to a corrupt habit of mind in which things are valued, not for their present excellence or perfection, but instrumentally, as leading to something better; and it insinuates into thought and feeling a sort of historical theodicy, in which past evil is justified as a means to present or future good. The idea of progress embodies a kind of (to adopt an expression used by Wyndham Lewis) in which the particularities of our world are seen and valued, not in themselves, but for what they might perhaps become, thereby leaving us destitute of the sense of the present and, at the same time, of the perspective of eternity.
John Gray (philosopher)