The first ideas of beauty formed by the mind are, in all probability, derived from colours.
The following are some of the words and phrases that come under this rule: therefore, too, indeed, however, moreover, then, accordingly, consequently; in short, in fine, in truth, in fact, to a certain extent, all things considered.
This rule of high pointing should be applied very sparingly, and might really be restricted to cases like the "I think" of the second example. Nowadays the tendency is against the pointing of such words as "therefore" and "indeed."
Where the words thrown in make a very distinct break in the sentence, they should be pointed off by means of the dash or of brackets.
XI. Where two parts of a sentence have some words in common, which are not expressed for each of them, but are given only when the words in which they differ have been separately stated, the second part is marked off by commas.
His classification is different from, and more comprehensive than, any other which we have met.
This foundation is a nursing-mother of lay, as distinguished from religious, oratorios.
These examples come within the principle of [Rule X.]
XII. When words are common to two or more parts of a sentence, and are expressed only in one part, a comma is often used to show that they are omitted in the other parts.
London is the capital of England; Paris, of France; Berlin, of Germany.