By a peculiar prerogative, not only each individual is making daily advances in the sciences, and may make advances in morality (which is the science, by way of eminence, of living well and being happy), but all mankind together is making a continual progress in proportion as the universe grows older. So that the whole human race, during the course of so many ages, may be considered as one man who never ceases to live and learn.
Blaise PascalLet a man choose what condition he will, and let him accumulate around him all the goods and gratifications seemingly calculated to make him happy in it; if that man is left at any time without occupation or amusement, and reflects on what he is, the meagre, languid felicity of his present lot will not bear him up. He will turn necessarily to gloomy anticipations of the future; and unless his occupation calls him out of himself, he is inevitably wretched.
Blaise Pascal