The Simple Sentence
The simple sentence contains only one subject and one predicate. The complex sentence contains one independent clause and at least one subordinate clause. The compound sentence contains two or more independent clauses.
It would be good advice to urge the employment of the simple sentence were it not for the fact that a long succession of sentences constructed exactly alike, making the same impression of form and sound and length, is likely to produce a deadly monotony of emphasis and pause, an impression of immaturity on the part of the speaker and of lack of skill in molding his phrases.
Yet, in the main, the simple sentence is a valuable kind to know how to deliver. Containing but a single thought it is likely to make a definite impression upon a listener. It offers him not too much to grasp. It leads him a single step along the way. It speaks clearly, concisely. Its advantages follow from its qualities. At the beginning of addresses it is especially efficient in leading the audience at the same rate—slowly, it should be—as the speaker. In intricate explanation, in close reasoning, in matters of paramount importance, it should be employed.
Management of the short, simple sentence in written prose is difficult. In spoken discourse, as well, it is so easy to fall into the First Primer style that while the advantages of the use of the simple sentence are great, the ability to produce good sentences in succession must be developed.

