Dmitri Mendeleev — "he reproached the modern scientific thought because it “got entangled in ions an…"

"Science which deals with the infinite is itself without bounds."

"To conceive, understand, and grasp the whole symmetry of the scientific edifice, including its unfinished portions, is equivalent to tasting that enjoyment only conveyed by the highest forms of beauty…"

"Pleasures flit by -- they are only for yourself; work leaves a mark of long-lasting joy, work is for others."

"The most important thing for a scientist is to be honest with himself and with others."

"The essence of chemistry lies not in the pursuit of knowledge alone, but also in the pursuit of truth."