Paul wrote all the much-loved classics made famous by the Simon & Garfunkel partnership, a fact which many people seem not to appreciate.

For what it's worth, I have two Paul Simon favourites - 1969's So Long Frank Lloyd Wright, a wistful musing on, of all things, a relatively obscure architect, and America from 1968, which touches on the shiftlessness of modern America, a nation perhaps searching for a true sense of belonging.
I also love the lines " It's carbon and monoxide / That old Detroit perfume..... "
..... the opening lines of 1971's Papa Hobo.

Classic singer / songwriter with huge mass appeal, but lacking an indefinable something ( perhaps it is a truly individual voice ) which the very best of his profession possess.