plural verb, having the force of a collective noun.

"None but the brave deserves the fair."-- Dryden.
"None knew thee but to love thee,
None named thee but to praise."-- Halleck.
"I look for ghosts; but none will force
Their way to me."-- Wordsworth.
"Of all the girls that e'er were seen,
There's none so fine as Nelly."-- Swift.

All, Whole

The word all is often incorrectly used for the whole.

"The river rose and spread over all the valley." This should be "over
the whole valley."

"The day being stormy, the members of Class A were all the children at
school to-day." Correct by saying "were the only children at school
to-day."
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Perpetually, Continually

Perpetually is not synonymous with continually. Perpetually means
never-ceasing. That which is done continually may be subject to
interruptions.