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

There exists everywhere a medium in things, determined by equilibrium.

The establishment of a law, moreover, does not take place when the first thought of it takes form, or even when its significance is recognised, but only when it has been confirmed by the results of the experiment.

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

No law of nature, however general, has been established all at once; its recognition has always been preceded by many presentiments.

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).

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.