One should put the other side of the picture, however, for in Siegel, who knew Frobenius for two years from 1915 when he became a student until Frobenius's death, relates his impression of Frobenius as having a warm personality and expresses his appreciation of his fast-paced varied and deep lectures.
Isa ay dapat na ilagay ang iba pang mga bahagi ng larawan, gayunpaman, para sa Siegel, na alam Frobenius para sa dalawang taon mula sa 1915 kung kailan siya ay naging isang mag-aaral hanggang Frobenius ng kamatayan, may kaugnayan sa kanyang impression ng Frobenius bilang pagkakaroon ng malambing at pagkatao expresses kanyang appreciation ng kanyang mabilis -paced iba-iba at malalim lektura.