John Tyndall Quote

Whether the other fixed stars have similar planetary companions or not is to us a matter of pure conjecture, which may or may not enter into our conception of the universe. But, probably, every thoughtful person believes, with regard to those distant suns, that there is in space something besides our system on which they shine.

Fragments of Science for Unscientific People: A Series of Detached, Essays, Chapter I (p. 11)