Motivation is at the heart of writing

Anybody can write about something. Not all people can write about something and actually mean it, though. To me, this phrase means that for your writing to truly mean something; for it to really be able to connect with a reader and make them feel for the topic as you feel, it has to be something you are passionate for. Having a passion for something, will in turn give you the motivation to write about it in a way that translates your feelings onto paper. In the simplest terms I can think of, this phrase means that the very core of your writing, the part that makes it what it is, is how much you put into it, and how much you care for it.