Work, look for peace and calm in work: You will find it nowhere else. Pleasures flit by -- they are only for yourself; work leaves a mark of long-lasting joy, work is for others.

Certain characteristic properties of elements can be foretold from their atomic weights.

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.

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).

No one nor anything can silence me.

I have to talk like this! It`s my job

The elements, if arranged according to their atomic weights, exhibit an apparent periodicity of properties.