Explain the metaphor of "cashing a check" and how it makes King's speech more effective.

When you cash the check, you get the money that they have promised to pay you. When King refers to checks in his speech, he is saying that the United States has promised something to African Americans.

Explanation:

imparadis't in one anothers arms  

the happier eden, shall enjoy their fill  

of bliss on bliss, while i to hell am thrust,  

where neither joy nor love, but fierce desire,  

among our other torments not the least,  

still unfulfill'd with pain of longing pines;  

yet let me not forget what i have gain'd  

from their own mouths; all is not theirs it seems:  

one fatal tree there stands of knowledge call'd,  

forbidden them to taste: knowledge forbidd'n?  

suspicious, reasonless. why should their lord  

envie them that? can it be sin to know,

answer: sure

explanation: i'd love to know everything but that burden is too much to bare.