I soon became convinced... that all the theorizing would be empty brain exercise and therefore a waste of time unless one first ascertained what the population of the universe really consists of.
-- Fritz Zwicky
   
Fritz Zwicky   Name:
Fritz Zwicky
Type:
Scientist
Nationality:
Swiss
Birth:
February 14, 1898
Death:
February 8, 1974
https://www.nutquote.com/quote/Fritz_Zwicky