Ahem. think of it this way, what word is interjecting
I'd say the answer is 'the visible is more dangerous than the invisible', because Duncan never suspected that his faithful Macbeth would be the one to kill him.
You should provide facts but you should take some story out from make-up of it or personal stories to attract the reader.So personally i think it is False.
The sentence is stating what the person did first in the list of all the things he/she did in the rest of the paragraph.
<span><u><em /></u>See in the sentence how it says, <u><em>“First,</em></u> I went to the wrong classroom for math."
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