Famous quotes containing the words stimulus and/or material:
“Decisive inventions and discoveries always are initiated by an intellectual or moral stimulus as their actual motivating force, but, usually, the final impetus to human action is given by material impulses ... merchants stood as a driving force behind the heroes of the age of discovery; this first heroic impulse to conquer the world emanated from very mortal forces—in the beginning, there was spice.”
—Stefan Zweig (18811942)
“This is no war for domination or imperial aggrandisement or material gain.... It is a war ... to establish, on impregnable rocks, the rights of the individual and it is a war to establish and revive the stature of man.”
—Winston Churchill (1874–1965)