Herbert Spencer...on the genesis of science

Without further argument it will, we think, be admitted that the sciences are none of them separately evolved - are none of them independent either logically or historically, but that all of them have , in a greater or less degree, required aid and reciprocated it. Indeed, it needs but to throw aside hypotheses, and contemplate the mixed character of surrounding phenomena, to see at once that these notions of division and succession in the kinds of knowledge are simply scientific fictions, good, if regarded merely as aids to study, bad, if regarded as representing realities in Nature. No facts whatever are presented to our senses uncombined with other facts - no facts whatever but are in some degree disguised by accompanying facts, disguised in such a manner that all must be partially understood before any one can be understood.

- The Genesis of Science, 1854