Indeed it is unclear whether he wrote any works at all and if he did they were certainly lost by the time of Aristotle who did not have access to any writings of Thales.
Sa katunayan ito ay hindi maliwanag kung siya wrote anumang gumagana sa lahat at kung siya ay sila ay tiyak mawawala sa oras ng Aristotle na hindi magkaroon ng access sa anumang writings ng Thales.