EACH, EVERY, EITHER, NEITHER
These words are continually misapplied. Each can be
applied to two or any higher number of objects to signify every one of
the number independently. Every requires more than two to be
spoken of and denotes all the persons or things taken
separately. Either denotes one or the other of two, and
should not be used to include both. Neither is the negative of either,
denoting not the other, and not the one, and relating to two persons or
things considered separately.
The following examples illustrate the correct usage of
Each man of the crew received a reward.
Every man in the regiment displayed bravery.
We can walk on either side of the street.
Neither of the two is to blame.