1.
The most striking features of the correctly bred German Shepherds are firmness of nerves, attentiveness, unshockability, tractability, watchfulness, reliability and incorruptibility together with courage, fighting tenacity and hardness.
Max von Stephanitz
5.
The breeder can indeed lay the foundations of a good and serviceable dog but the trainer must see to it that he brings to their highest possible development, the physical and mental foundations already laid and thus his is the more grateful task.
Max von Stephanitz