Full Idea
An optimal classification can be obtained by identifying the deepest and most general principles that govern the atoms of the elements.
Gist of Idea
The best classification needs the deepest and most general principles of the atoms
Source
Eric R. Scerri (The Periodic Table [2007], 10 'Continuum')
Book Reference
Scerri,Eric R.: 'The Periodic Table' [OUP 2007], p.285
A Reaction
He adds (p.286) that the best system will add the 'greatest degree of regularity' to these best principles.