What are the motifs in Season of Migration to the North by Tayeb Salih?

The destructive behavior is a motif that manifests in many of the novel's characters throughout the book. Mustafa's days in England are fraught with destructive behavior. He is simultaneously seeing five different Western women, making promises to each. Many of them kill themselves. He admits to killing his wife, Jean Morris and to contributing to the death of the other room by making empty promises of love to them.