A cheery New Year's thought from Karl Marx, Communist Manifesto, quoted by Marshall Berman in Adventures in Marxism

The bourgeoisie cannot exist without constantly revolutionizing the instruments of production, and thereby the relations of production, and with them the whole relations of society... Constant revolutionizing of production, uninterrupted disturbance of all social conditions, everlasting uncertainty and agitation distinguish the bourgeois epoch from all earlier ones. All fixed, fast-frozen relations, with their train of ancient and venerable prejudices and opinions, are swept away, and all new-formed ones become antiquated before they can ossify. All that is solid melts into air, all that is holy is profaned, and man at last is forced to face with sober senses, his real conditions of life, and his relations with his kind.