Desire , to know why, and how, CURIOSITY; such as is in no living creature but Man ; so that Man is distinguished, not only by his Reason; but also by this singular Passion from other Animals ; in whom the appetite of food, and other pleasures of Sense, by predominance, take away the care of knowing causes; which is a Lust of the mind, that by a perseverance of delight in the continual and indefatigable generation of Knowledge, exceedeth the short vehemence of any carnal Pleasure.
Thomas Hobbes (2008). “Leviathan”, p.51, Simon and Schuster