The correct rate of speed in innovating changes in long-standing social customs has not yet been determined by even the most expert of the experts. Personally I am beginning to think there is more danger in lagging than in speeding up cultural change to keep pace with mechanical change.
(Mary Barnett Gilson (1877-?), U.S. factory personnel manager, economist, and educator. What's Past is Prologue, ch. 17 (1940).)
Such is the state of life, that none are happy but by the anticipation of change: the change itself is nothing; when we have made it, the next wish is to change again. The world is not yet exhausted; let me see something tomorrow which I never saw before.
(Samuel Johnson (1709-1784), British author, lexicographer. Nekayah, in The History of Rasselas, ch. 47 (1759).)