Some people might find this opinion article interesting. This might be of interest to learners of English too, especially the part about different types of metaphors we use for different topics:
Poetry for Everyday Life (NYTimes.com)
It seems self evident at first, but he raises some interesting points that generated 'a lot of controversy'* in the comments section. If anyone has any thoughts or opinions, please share.
*inasmuch as the topic of metaphors can be controversial
Poetry for Everyday Life would of any one according to you....