ustumque sit_) lay the first stone of the Temple of
Peace.

Over and above the enclosing brackets, a parenthesis causes no change
in the punctuation of the sentence that contains it; in other words,
if we were to omit the parenthesis, no change ought to be necessary in
the punctuation of the rest of the sentence. The comma is inserted
after the parenthesis in the first example, because the comma would be
needed even if there were no parenthesis.

In the second example, there would be no comma before "lay," if there
were no parenthesis; accordingly the comma is not to be inserted
merely because there is a parenthesis. A parenthesis is sufficiently
marked off by brackets.

Observe also that the comma in the first example is placed after, not
before, the parenthesis. The reason for this is that the parenthesis
belongs to the first part of the sentence, not to the second.

LI. A complete sentence occurring parenthetically in a paragraph is
sometimes placed within brackets.

Godfrey knew all this, and felt it with the greater force
because he had constantly suffered annoyance from witnessing
his father's sudden fits of unrelentingness, for which his
own habitual irresolution deprived him of all sympathy. (He
was not critical on the faulty indulgence which preceded
these fits; _that_ seemed to him natural enough.) Still
there was just the chance, Godfrey thought, that his
father's pride might see this marriage in a light that would
induce him to hush it up, rather than turn his son out and
make the family the talk of the country for ten miles round.

Note that the full stop should be placed inside, not outside, the
brackets.

LII. Where, in quoting a passage, we throw in parenthetically
something of our own, we may use square brackets.

Compare the following account of Lord Palmerston: "I have
heard him [Lord Palmerston] say that he occasionally found
that they [foreign ministers] had been deceived by the open
manner in which he told them the truth."

"The _Leviathan_ of Hobbes, a work now-a-days but little
known [and not better known now than in Bentham's time], and
detested through prejudice, and at second-hand, as a defence
of despotism, is an attempt to base all political society
upon a pretended contract between the people and the
sovereign."--_Principles of Legislation._

To use the square brackets