... scientific research is compounded of ... empirical procedures, general speculative ideas, and mathematical or abstract reasoning.
James Bryant ConantScience advances, not by the accumulation of new facts, but by the continuous development of new concepts.
James Bryant ConantTherefore, a grotesque account of a period some thousands of years ago is taken seriously though it be built by piling special assumptions on special assumptions, ad hoc hypothesis [invented for a purpose] on ad hoc hypothesis, and tearing apart the fabric of science whenever it appears convenient. The result is a fantasia which is neither history nor science.
James Bryant Conant