The Sieur de Joinville left a record of the energy with which the relatively harmless Greek fire educated and enlarged the French mind in a single night in the year 1249, when the crusaders were trying to advance on Cairo.

Sieur de Joinville 留下了一份记录，在 1249 年十字军试图向开罗推进时，相对无害的希腊大火在一个晚上教育和扩大了法国人的思想。