The literary world is grieving for David Foster Wallace, an author of seemingly unstoppable curiosity, imagination and ambition who apparently killed himself last week. Readers are seeking out his work, including his 1,000-page novel "Infinite Jest" and the essay collection "Consider the Lobster."

Wallace, who wrote with an explosive, ironic, but deeply serious passion about subjects ranging from tennis and politics to mathematics and cruise ships, was found dead by his wife in his home Friday night, according to the Claremont, Calif., police department.