Scientist Quotations - Categories Index for Initial X
This list includes science quotes from archaeologists, biologists, chemists, geologists, inventors and inventions, mathematicians, physicists plus pioneers in medicine, science events and technology.
This index gives quotes listed under category headings. When the category is a scientist name, the index is for any reference made ABOUT the scientist BY another person.
At the heart of science is an essential balance between two seemingly contradictory attitudes--an openness to new ideas, no matter how bizarre or counterintuitive they may be, and the most ruthless skeptical scrutiny of all ideas, old and new. This is how deep truths are winnowed from deep nonsense. -- Carl Sagan
