The Canadian book world has lost a respected, thoughtful and knowledgeable observer.

Derek Weiler, editor of Quill and Quire,  died suddenly at home in Toronto on Sunday at the age of 40. Although no specific cause of death was given in the announcement on the periodical’s website, he was reported to have been in poor health for several years.

Weiler joined the staff of Quill and Quire, Canada’s leading publishing industry periodical, in 1999 as a writer, assuming the editor’s chair five years later. He will be missed.