"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 human mind is always eager for novelty and impatient of repetition."

"Here, then: a revolution [in science and chemistry] has taken place in an important part of human knowledge since your departure from Europe… I will consider this revolution to be well advanced and ev…"

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

"It is only by means of experiments that we can arrive at the truth."