Why did chinua Achebe chose to to name his book thing fall apart

the title of the book was derived from the poem of William Better Yeats called the second tommorow from the third and forth line of the poem

illogical logic there is a corridor between the garage and the balcony. illogical logic i rent an apartment with four rooms: a kitchen, a bedroom, a living room illogical logic xavier starts a new job in another city. illogical logic the rents in this cellar are really too expensive. illical logic barbara's studio has a garden. illogical logic