The line you quote, 'By the waters of Leman I sat down and wept', is an
allusion. Here is a pun, from Shakespeare:
'Is this a dagger I see before me,/ The handle toward my hand?'
(hand/handle a favourite, see 'Titus Andronicus' if you can stomach it)
'Now is the winter of our discontent/Made glorious summer by this son of
'The bare ruined choirs where late the sweet birds sang' ('choirs of
men'/'choirs of birds'/ choir, place, choir, group/ see W Empson)
'That lie will lie so heavy on thy sword' ('lie/lie', one of
Shakespeare's richest puns)
'Honest, honest Iago' ('honest', truth-telling, 'honest', good chap, see
And so on. I quote from memory.
A few allusions:
'You! hypocrite lecteur, mon semblable, mon frere'. --TWL
'Lilies that fester smell far worse than weeds'. --Shakespeare (Sonnets,
'Pray for us now and in the hour of our birth'--Animula/Ave Maria
'Come live with me and be my love'--Marlowe, Raleigh, Donne
'You don't want madhouse and the whole thing there.' --W Empson
(allusion to King Lear)
Etc. (I quote from memory: please excuse).
I hope this helps, in the hope of straightening things out.