I like Yeats and Larkin. Here's one of Larkin's most famous and quoted poems, but few know more than the first couple of lines:
They fuck you up, your mum and dad.
They may not mean to, but they do.
They fill you with all the faults they had
And add some extra, just for you.
But they were fucked up in their turn
By fools in old-style hats and coats,
Who half the time were soppy-stern
And half at one another’s throats.
Man hands on misery to man.
It deepens like a coastal shelf.
Go out as early as you can,
And don’t have any kids yourself
The most important book I have read on literature, poetry, etc, is CS Lewis' 'A Preface to Paradise Lost' The openind, where he describes what is required to judge something is an unassailable piece of arguing. You can read it without knowing Milton, too. ;-)