First Ascertained Quotes

1 First Ascertained quotes by 1 unique authors

• 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… — Fritz Zwicky

Who Wrote These First Ascertained Quotes

1 author contributed a total of 1 First Ascertained Quote as follows:

• 1 First Ascertained Quote by Fritz Zwicky