There is an excessive complication in the following:—"It cannot, at all events, if the consideration demanded by a subject of such importance from any one professing to be a philosopher, be given, be denied that &c."
Where a speaker feels that his hearers have forgotten the connection of the beginning of the sentence, he should repeat what he has said; e.g. after the long parenthesis in the last sentence he should recommence, "it cannot, I say, be denied." In writing, however, this licence must be sparingly used.
A short parenthesis, or modifying clause, will not interfere with clearness, especially if antithesis he used, so as to show the connection between the different parts of the sentence, e.g. "A modern newspaper statement, though probably true, would be laughed at if quoted in a book as testimony; but the letter of a court gossip is thought good historical evidence if written some centuries ago." Here, to place "though probably true" at the beginning of the sentence would not add clearness, and would impair the emphasis of the contrast between "a modern newspaper statement" and "the letter of a court gossip."
*27. In conditional sentences, the antecedent clauses must be kept distinct from the consequent clauses.*—There is ambiguity in "The lesson intended to be taught by these manoeuvres will be lost, if the plan of operations is laid down too definitely beforehand, and the affair degenerates into a mere review." Begin, in any case, with the antecedent, "If the plan," &c. Next write, according to the meaning: (1) "If the plan is laid down, and the affair degenerates &c., then the lesson will be lost;" or (2) " … then the lesson … will be lost, and the affair degenerates into a mere review."
*28. Dependent clauses preceded by "that" should be kept distinct from those that are independent.*
Take as an example:
(1) "He replied that he wished to help them, and intended to make preparations accordingly."
This ought not to be used (though it sometimes is, for shortness) to mean:
(2) "He replied …, and he intended."
In (1), "intended," having no subject, must be supposed to be connected with the nearest preceding verb, in the same mood and tense, that has a subject, i.e. "wished." It follows that (1) is a condensation of: