No One Nor Anything Can Silence Me.

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.

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).

There Exists Everywhere A Medium In Things, Determined By Equilibrium.

If All The Elements Are Arranged In The Order Of Their Atomic Weights, A Periodic Repetition Of Properties Is Obtained. This Is Expressed By The Law Of Periodicity.