At bottom each “exact” science is, and must be speculative, and its chief tool of research, too rarely used with both courage… — Reginald Aldworth Daly Copy Share Image
We have failed to protect science against speculative extensions of nature, continuing to assign physical and mathematical properties to hypothetical entities beyond… — Robert Lanza Copy Share Image
The history of science is everywhere speculative. It is a marvelous hiatory. It makes you proud to be a human being. — Karl Popper Copy Share Image
True science is never speculative; it employs hypotheses as suggesting points for inquiry, but it never adopts the hypotheses as though they… — Cleveland Abbe Copy Share Image
