Optically Pure Air

Famous quotes containing the words pure and/or air:

    Genius resembles a bell; in order to ring it must be suspended into pure air, and when a foreign body touches it, its joyful tone is silenced.
    Franz Grillparzer (1791–1872)

    Enthusiasm produces the most cruel disorders in human society; but its fury is like that of thunder and tempest, which exhaust themselves in a little time, and leave the air more calm and serene than before.
    David Hume (1711–1776)