I have been sitting watching that ever since I came back, the continuous variations of light and shadow.
Variations
The iambic pentameter owes its pre-eminence in English poetry to its genius for variation. Good blank verse does not sound like a series of identically measured lines. It sounds like a series of subtle variations on the same theme.
The reason for natural selection’s great success is that it provides a satisfying explanation of how evolution might have occurred: individual organisms vary, and if those variations are inherited, the successful ones will survive and propagate and pass down their desirable traits to succeeding generations.
I want to live and feel all the shades, tones, and variations of mental and physical experience possible in my life. And I am horribly limited.
The main concern of the study is with the outline of a theoretical system. Its minor variations from writer to writer are not a matter of concern to this analysis.