Simon Newcomb Quote

The demonstration that no possible combination of known substances, known forms of machinery and known forms of force, can be united in a practical machine by which men shall fly along distances through the air, seems to the writer as complete as it is possible for the demonstration to be.

Side-lights on Astronomy and Kindred Fields of Popular Science (ed. 1906)

The demonstration that no possible combination of known substances, known forms of machinery and known forms of force, can be united in a practical...

The demonstration that no possible combination of known substances, known forms of machinery and known forms of force, can be united in a practical...

The demonstration that no possible combination of known substances, known forms of machinery and known forms of force, can be united in a practical...

The demonstration that no possible combination of known substances, known forms of machinery and known forms of force, can be united in a practical...