Complex sentence: Part III contains four odes to living and deceased writers who influenced Lowell; with the exception of Hart Crane, Lowell knew all of them personally and considered them to be his contemporaries (particularly the poet Delmore Schwartz).
Split into simpler sentences: Part III contains four odes to living and deceased writers who influenced Lowell. With the exception of Hart Crane, Lowell knew all of them personally and considered them to be his contemporaries (particularly the poet Delmore Schwartz).