We must expect the discovery of many as yet unknown elements-for example, elements analogous to aluminum and silicon- whose atomic weight would be between 65 and 75. Dmitri Mendeleev aluminumanalogousatomic Change image and share on social
The elements, if arranged according to their atomic weights, exhibit an apparent periodicity of properties. Dmitri Mendeleev apparentarrangeatomic Change image and share on social
Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (eg. Pt, Ir, Os) or which increase regularly (eg. K, Ru, Cs). Dmitri Mendeleev atomicchemicalelement Change image and share on social
The most all penetrating spirit before which will open the possibility of tilting not tables, but planets, is the spirit of free human inquiry. Believe only in that. Dmitri Mendeleev freehumaninquiry Change image and share on social
It is the function of science to discover the existence of a general reign of order in nature and to find the causes governing this order. And this refers in equal measure to the relations of man - social and political - and to the entire universe as a whole. Dmitri Mendeleev discoverentireequal share on social
Work, look for peace and calm in work: you will find it nowhere else. Dmitri Mendeleev calmfindpeace Change image and share on social
Pleasures flit by - they are only for yourself; work leaves a mark of long-lasting joy, work is for others. Dmitri Mendeleev flitjoylast Change image and share on social
There is nothing in this world that I fear to say. Dmitri Mendeleev fearworld Change image and share on social
No law of nature, however general, has been established all at once; its recognition has always been preceded by many presentiments. Dmitri Mendeleev establishgenerallaw Change image and share on social
