第七篇書信(英语:Seventh Letter)在柏拉圖研究,尤其是在未成文學說(英语:Plato'sunwrittendoctrines)派中有極其重要的地位;對於其真實性目前沒有定論。 Plato; Benjamin Jowett (tr.). Seventh Letter. The Internet
Charles H. Plato's Funeral Oration: The Motive of the Menexenus. Classical Philology. 1963, 58 (4): 220–234. doi:10.1086/364821. Monoson, S. Sara. Remembering
small 'p') need not accept any of the doctrines of Plato, just as modern nominalists need not accept the doctrines of medieval nominalists.)” 抽象对象 (页面存档备份,存于互联网档案馆)