It seems wisest to assume the worst from the beginning...and let anything better come as a surprise.

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.

Science, my boy, is composed of errors, but errors that it is right to make, for they lead step by step to the truth.

Therever fortune clears a way, thither our ready footsteps stray.

Look with all your eyes, look.

I wanted to see what no one had yet observed, even if I had to pay for this curiosity with my life.

Everything is possible for an eccentric, especially when he is English.