marsal, eva. “Who Is Happy? Using Poems of the Philosophizing Child Friedrich Nietzsche to Instigate Reflection in Children and Young People Today”. childhood & philosophy 3, no. 6 (April 27, 2010): pp. 187–212. Accessed May 14, 2024. https://www.e-publicacoes.uerj.br/childhood/article/view/20517.