Dmitri Mendeleev — "I consider it my duty to warn against this tendency to make a science of alchemy…"

"The properties of the elements are a periodic function of their atomic weights."

"It was clear that in the United States there was a development not of the best, but of the middle and worst sides of European civilization; the notorious general voting, the tendency to politics... al…"

"The greatest value of a scientific discovery is not so much in the discovery itself as in the stimulus it provides for further investigation."

"To protect the Russian borders from enemies, I would surround the whole country with a continuous wall of vodka."

"The periodic law will not be overthrown, but only further developed."