"As ideas are preserved and communicated by means of words, it necessarily follows that we cannot improve the language of any science, without at the same time improving the science itself; neither can…"

"The progress of science is like the ascent of a mountain, where every step brings new horizons into view."

"Science advances by correcting its errors."

"I have never been able to believe in anything that I could not demonstrate by experiment."

"The success of charlatans, sorcerors, and alchemists—and all those who abuse public credulity—is founded on errors in this type of calculation."