 He was nominated for the Nobel Prize in Literature five times.Kloos was one of the leaders, along with the poet Herman Gorter, the critic Lodewijk van Deyssel, and the prolific writer and psychiatrist Frederik van Eeden, of the influential group of Dutch writers known as the Movement of Eighty (Beweging van Tachtig), otherwise known simply as the Tachtigers, who interacted and worked with each other in Amsterdam in the 1880s.As part of this movement, Kloos criticized mainstream literary style as bookish and overly wrought, and instead sought to write poetry in which the form matched the content, so that intimate experiences should be conveyed with a natural intimacy of expression.