A ghastly affectation of life

From Thomas Carlyle, The History of the French Revolution

Meanwhile it is singular how long the rotten will hold together, provided you do not handle it roughly. For whole generations it continues standing, 'with a ghastly affectation of life,' after all life and truth has fled out of it; so loth are men to quit their old ways; and, conquering indolence and inertia, venture on new. Great truly is the Actual; is the Thing that has rescued itself from bottomless deeps of theory and possibility, and stands there as a definite indisputable Fact, whereby men do work and live, or once did so. Widely shall men cleave to that, while it will endure; and quit it with regret, when it gives way under them. Rash enthusiast of Change, beware! Hast thou well considered all that Habit does in this life of ours; how all Knowledge and all Practice hang wondrous over infinite abysses of the Unknown, Impracticable; and our whole being is an infinite abyss, over-arched by Habit, as by a thin Earth-rind, laboriously built together?