"The true wealth of a nation is its knowledge and its industry."

"The greatest discoveries are not made by chance, but by observation and reflection."

"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…"

"It is almost possible to predict one or two days in advance, within a rather broad range of probability, what the weather is going to be; it is even thought that it will not be impossible to publish d…"

"I have endeavored to make chemistry a science of reasoning, and not of memory."