Speculations apparently the most unprofitable have almost invariably been those from which the greatest practical applications have emanated.


Preliminary Discourse on the Study of Natural Philosophy (1831)

John Herschel Quotes

Speculations apparently the most unprofitable have almost invariably been those from which the greatest practical applications have emanated.

Speculations apparently the most unprofitable have almost invariably been those from which the greatest practical applications have emanated.

Speculations apparently the most unprofitable have almost invariably been those from which the greatest practical applications have emanated.

Speculations apparently the most unprofitable have almost invariably been those from which the greatest practical applications have emanated.