Science, my lad, is made up of mistakes, but they are mistakes which it is useful to make, because they lead little by little to the truth.
Mientras el corazón lata y la carne palpite, no me explico que un ser dotado de voluntad se deje dominar por la desesperación.
[we see that] science is eminently perfectible, and that each theory has constantly to give way to a fresh one.
