"Life is a chemical function."

"The imagination is a dangerous guide in science, but it can be a useful servant."

"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…"

"Imagination, on the contrary, which is ever wandering beyond the bounds of truth, joined to self-love and that self-confidence we are so apt to indulge, prompt us to draw conclusions which are not imm…"

"Nothing is lost, nothing is created, everything is transformed."