The philosopher's lecture was intended for the edification of both moral and intellectual growth.

edification 是由动词 edify（启迪、教化）加上名词后缀 -ation 构成的名词。edify 源自拉丁语 aedificare，原意为"建造"，引申为"道德或智力上的培养"。edification 指"通过教导或启发来提升道德或智力水平的过程"。