Leonardo da Vinci Quote
Men are in error when they lament the flight of time, accusing it of being too swift, and not perceiving that it is sufficient as it passes; but good memory, with which nature has endowed us, causes things long past to seem present.
The Notebooks of Leonardo da Vinci (Richter, 1888) - XIX Philosophical Maxims. Morals. Polemics and Speculations.