"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…"

"The greatest obstacle to discovery is not ignorance, but the illusion of knowledge."

"The value of a discovery consists not in its novelty, but in its truth."

"The art of drawing conclusions from experiments and observations consists in evaluating probabilities and in judging if they are great enough to constitute proofs."

"The future of chemistry depends on the precision of its instruments and the accuracy of its observations."