Author: Leonard Euler

Cited by

• Arturo Pérez-Reverte (1)
  • IN: The Siege (2010) Historical Fiction, NULL
    EPIGRAPH: In attempting to dive into the mysteries of nature, it is of importance to know, if the heavenly bodies act upon each other by impulsion or by attraction; if a certain subtle invisible matter impels them toward each other, of it they are endowed with a secret or occult quality by which they are mutually attracted.
    FROM: Letters to a German Princess, (1772), Letter, Switzerland