No law of nature, however general, has been established all at once; its recognition has...#Dmitri Mendeleev
Elements which are similar as regards their chemical properties have atomic weights which are either...#Dmitri Mendeleev
Certain characteristic properties of elements can be foretold from their atomic weights.#Dmitri Mendeleev
We must expect the discovery of many as yet unknown elements-for example, elements analogous to...#Dmitri Mendeleev
