"To burn oil!.. You can fuel with money as well."

"Doctor, you have science, I have faith.--to his physician, this was possibly a Jules Verne quote."

"I wish to establish some sort of system not guided by chance but by some sort of definite and exact principle."

"We should still expect to discover many unknown simple bodies; for example, those similar to aluminum and silicon, el…"

"I have no need of proof. The laws of nature, unlike the laws of grammar, admit of no exception."

"I suppose when my unknown elements are found, more people will pay us attention."

"The occultist has the satisfaction of knowing that the great Russian chemist, Mendeleef, preferred the atomic theory.…"

"Even though Mendeleev always denied that electrons exist, they later turned out to be vital for ordering the elements…"

"His stroke of genius was to leave gaps for elements that were still to be discovered, predicting what their propertie…"

"1. The elements, if arranged according to their atomic weights, exhibit an evident periodicity of properties. 2. Elem…"