Famous quotes containing the words demand and/or test:
“That whatever a man says, promises, or resolves in passion he must stick to later on when he is cold and sober—this demand is among the heaviest burdens that weigh on humankind.”
—Friedrich Nietzsche (1844–1900)
“Experimental work provides the strongest evidence for scientific realism. This is not because we test hypotheses about entities. It is because entities that in principle cannot be ‘observed’ are manipulated to produce a new phenomena
[sic] and to investigate other aspects of nature.”
—Ian Hacking (b. 1936)