The relation indicated by these pronouns is that of reciprocity. Hence they are often called reciprocal pronouns.

There is no real distinction between each other and one another. The rules sometimes given for such a distinction are not supported by the best usage.

139. One (possessive one’s) is often used as an indefinite personal pronoun. Thus,—

One does not like one’s [NOT his or their] motives to be doubted.

The use of his (for one’s) to refer back to a preceding one is found in respectable writers, but is contrary to the best usage.

For the indefinite use of we, you, they, see [§ 118].

140. All, several, few, many, and similar words are often classed as indefinites. They may be used as adjectives or as substantives. Everybody, everything, anybody, anything, somewhat, aught, naught,[20] etc., are called indefinite nouns.

141. Care should be taken in framing such sentences as the following:—