The brightest flashes in the world of thought are incomplete until they have been proven to have their counterparts in the world of fact.
-- John Tyndall
   
John Tyndall   Name:
John Tyndall
Type:
Physicist
Nationality:
English
Birth:
August 2, 1820
Death:
December 4, 1893
https://www.nutquote.com/quote/John_Tyndall