English verbs, as they are now commonly used, run through their entire conjugation without acquiring a single syllable from inflection, except sometimes when the sound of _d, s_, or _st_ cannot be added to them.
5.

This simplicity, so characteristic of our modern English, as well as of the Saxon tongue, its proper parent, is attended with advantages that go far to compensate for all that is consequently lost in euphony, or in the liberty of transposition.

Our formation of the moods and tenses, by means of a few separate auxiliaries, all monosyllabic, and mostly without inflection, is not only simple and easy, but beautiful, chaste, and strong.
In my opinion, our grammarians have shown far more affection for the obsolete or obsolescent terminations _en, eth, est_, and _edst_, than they really deserve.

Till the beginning of the sixteenth century, _en_ was used to mark the plural number of verbs, as, _they sayen_ for _they say_; after which, it appears to have been dropped.

Before the beginning of the seventeenth century, _s_ or _es_ began to dispute with _th_ or _eth_ the right of forming the third person singular of verbs; and, as the Bible and other grave books used only the latter, a clear distinction obtained, between the solemn and the familiar style, which distinction is well known at this day.