POTENTIAL MOOD.
The potential mood is that form of the verb, which expresses the power, liberty, possibility, or necessity of the being, action, or passion. It is used in the first four tenses; but the potential imperfect is properly an aorist: its time is very indeterminate; as, "He would be devoid of sensibility were he not greatly satisfied."—Lord Kames, El. of Crit., Vol. i, p. 11.