languagelearning

Neither of those splits are really valid as is, if the meaning is to be retained.

The "with authors" clause as originally written is a continuation referring to what came before, but starting a new sentence that way suggests it will refer to what follows. Similarly, the "reflection of our times" clause is a restatement of what came before—an apposition. This could be done with a new sentence, but it would need a demonstrative pronoun to clarify that: "This is a reflection....".

Better points for new sentences are where "and" joins clauses. For example:—

[...] thought and emotion, and this style, this grandiloquent mode of expression, [...]

could easily become:—

[...]thought and emotion. This style, this grandiloquent mode of expression, [...]

since the demonstrative back-reference is already present.