The unknown, it is true, is indefinitely vast, and the rays of light which we can project into its darkness penetrate but a short way.
Problems in Astrophysics, Preface (p. vii), Adam & Charles Black. 1903
The unknown, it is true, is indefinitely vast, and the rays of light which we can project into its darkness penetrate but a short way.
Problems in Astrophysics, Preface (p. vii), Adam & Charles Black. 1903