Pierre de Fermat Quotes
And perhaps, posterity will thank me for having shown it that the ancients did not know everything.
Fermat, Pierre de. "Letter to Pierre de Carcavi, August 1659." The Mathematical Career of Pierre de Fermat, 1601-1665, by Michael Sean Mahoney, Princeton University Press, 1994, p. 351.
Many important breakthroughs emanated from scientific curiosity of some scientist who was not thinking of any practical application at all.
Pierre de Fermat was a French lawyer at the Parlement of Toulouse, France, and a mathematician who is given credit for early developments that led to infinitesimal calculus, including his technique of adequality. In particular, he is recognized for his discovery of an original method of finding the greatest and the smallest ordinates of curved lines, which is analogous to that of differential calculus, then unknown, and his research into number theory. He made notable contributions to analytic geometry, probability, and optics. He is best known for his Fermat's principle for light propagation and his Fermat's Last Theorem in number theory, which he described in a note at the margin of a copy of Diophantus' Arithmetica.