Sometimes you may need to use a strong quote which does not actually contain all the information your reader needs to make sense of the sentence. This can happen because the person is speaking about something he or she does not mention in the actual quote itself. In such cases you can insert the missing fact - often a name or a title - in square brackets - within the quote to show what you have done For example, the Finance Minister might be speaking in Parliament about the May Budget but did not use the actual title in the sentence you want to quote:
Dividing the quote may highlight a particular nuance of the quote’s meaning. In the first example, the division calls attention to the two parts of Hamlet’s claim. The first phrase states that nothing is inherently good or bad; the second phrase suggests that our perspective causes things to become good or bad. In the second example, the isolation of “Death thou shalt die” at the end of the sentence draws a reader’s attention to that phrase in particular. As you decide whether or not you want to break up a quote, you should consider the shift in emphasis that the division might create.