felixsalmon | You CAN get your quotes on Tumblr to go bold or italicized. If your line breaks are disappearing, you can format that too. Just write the formatting into the quote. So <b>Bold text.</b> <i>Italics.</i> The formatting for getting line breaks is just <br />, no closing tag. So put <br />.
I just did this, it works! Even though the quote does not look like an HTML field, you can put HTML in there. Weird, yet wonderful.