It must be remembered that two negatives in the English language destroy each other and are equivalent to an affirmative. Thus "I don't know nothing about it" is intended to convey, that I am ignorant of the matter under consideration, but it defeats its own purpose, inasmuch as the use of nothing implies that I know something about it. The sentence should read—"I don't know anything about it."

Often we hear such expressions as "He was not asked to give no opinion,"expressing the very opposite of what is intended. This sentence implies that he was asked to give his opinion. The double negative, therefore, should be carefully avoided, for it is insidious and is liable to slip in and the writer remain unconscious of its presence until the eye of the critic detects it.

FIRST PERSONAL PRONOUN

The use of the first personal pronoun should be avoided as much as possible in composition. Don't introduce it by way of apology and never use such expressions as "In my opinion," "As far as I can see," "It appears to me," "I believe," etc. In what you write, the whole composition is expressive of your views, since you are the author, therefore, there is no necessity for you to accentuate or emphasize yourself at certain portions of it.

Moreover, the big I's savor of egotism! Steer clear of them as far as you can. The only place where the first person is permissible is in passages where you are stating a view that is not generally held and which is likely to meet with opposition.