An Impressive Beginning

Boulevarding and delineating
Swerving and desisting
An infinitesimal particle
A non-void secateur

An impressive beginning
And a slide toward China
Implicit and duplicite
Particle and metaparticle

Are you smaller than a quark
Or do you just like the 2's and 3's?
Well I've got a theory
I've always got a theory

Remoulading and generalising
Imperious and egalitarian
Half the week is a Wednesday
The changeless repartee