Chance favors the prepared mind.
My strength lies solely in my tenacity.
Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.
It is surmounting difficulties that makes heroes.
If it is a terrifying thought that life is at the mercy of the multiplication of these minute bodies [microbes], it is a consoling hope that Science will not always remain powerless before such enemies.
My opinion - nay more, my conviction - is that, in the present state of science, as you rightly say, spontaneous generation is a chimera; and it would be impossible for you to contradict me, for my experiments all stand forth to prove that spontaneous generation is a chimera.