Laudator Temporis Acti

George Santayana (1863-1952), "Tipperary," Soliloquies in England and Later Soliloquies (London: Constable and Company Ltd., 1922), pp. 99-106 (at 101):

If experience could teach mankind anything, how different our morals and our politics would be, how clear, how tolerant, how steady! If we knew ourselves, our conduct at all times would be absolutely decided and consistent; and a pervasive sense of vanity and humour would disinfect all our passions, if we knew the world. As it is, we live experimentally, moodily, in the dark; each generation breaks its egg-shell with the same haste and assurance as the last, pecks at the same indigestible pebbles, dreams the same dreams, or others just as absurd, and if it hears anything of what former men have learned by experience, it corrects their maxims by its first impressions, and rushes down any untrodden path which it finds alluring, to die in its own way, or become wise too late and to no purpose.

Id. (at 103-104):

Reserve a part of your wrath; you have not seen the worst yet. You suppose that this war has been a criminal blunder and an exceptional horror; you imagine that before long reason will prevail, and all these inferior people that govern the world will be swept aside, and your own party will reform everything and remain always in office. You are mistaken. This war has given you your first glimpse of the ancient, fundamental, normal state of the world, your first taste of reality. It should teach you to dismiss all your philosophies of progress or of a governing reason as the babble of dreamers who walk through one world mentally beholding another.