Often the quality of an artist's output, whether it's from a writer, musician or painter, is inversely proportional to its quantity. This is not the case with Prince.
Here is a very small man with a huge amount of energy and an equal amount of talent, and he's combined the two to produce a prodigous quantity of high quality material, ranging from the lyrically sparse soul / funk love song I Feel For You way back in 1979, through the smash hit Nothing Compares 2 U, the perfect vehicle for the talented Sinead O' Connor, to Manic Monday, which he wrote for The Bangles under the pseudonym of Christopher.
I love the poetic opening lines, which capture so succinctly how we must all have felt when waking on a Monday morning ( OK, maybe not precisely, guys, but you know what I mean ! )

" Six 0' clock already I was just in the middle of a dream
I was kissin' Valentino by a crystal blue Italian stream "

Superb lyricist. Unique sound. One of the top songwriters of the 1980's.