This is a passage from The Iron Heel (1908), a little-known dystopian novel by Jack London. Speaking to a room full of ministers and academics, the working class hero, Ernest Everhard, cites Herbert Spencer.
“As Spencer says, the data of any particular science are partially unified knowledge. Philosophy unifies the knowledge that is contributed by the sciences. Philosophy is the science of science, the master science, if you please.”Excerpt From The Iron Heel by Jack London
(19 ) https://books.apple.com/us/book/the-iron-heel/id498654789.
But Spencer was wrong. There can never be a science of science because there be can be no single, unifying observation–or an observation without a blind spot. All observations are partial, and they all reduce the complexity of whatever they are supposed to be observing. All we can ever have is a plurality of partial knowledges, and these ways of seeing can not be harmonized.