He was the first to write an Elements of Geometry and although his work is now lost it must have contained much of what Euclid later included in Books 1 and 2 of the Elements. Proclus, the last major Greek philosopher, who lived around 450 AD wrote:
Siya ay ang unang sumulat ng Sangkap ng geometry at kahit sa kanyang trabaho ngayon ay nawala ito ay dapat magkaroon ng marami na kung ano ang Euclid mamaya kasama sa Books 1 at 2 ng mga Sangkap. Proclus, sa huling major Greek pilosopo, na nanirahan sa paligid ng 450 AD wrote: