I give you the tea bag and Tractatus!

A century ago Ludwig Wittgenstein changed philosophy for ever | The Economist

Of all the innovations that sprang from the trenches of the first world war—the zip, the tea bag, the tank—the “Tractatus Logico-Philosophicus” must be among the most elegant and humane.

That the book ever made it into print was miraculous. Before the war, as a student at Cambridge, Wittgenstein’s talent was clear to his contemporaries, who begged him to put his many thoughts into writing. He refused, fearing that an imperfect work of philosophy was worthless. His mentor, Bertrand Russell, made a habit of taking notes when the two spoke, lest his protégé’s genius be lost to memory. Wittgenstein himself had other preoccupations, principally suicide.