These are Nietzsche’s three metamorphoses of the spirit; camel, lion, and child.
The Camel: Takes the heavy weight of all burdens; the load-bearing spirit. For all things heavy does the camel kneel down and take upon its back. The camel asks, “What is the heaviest thing, that I may bear it, and rejoice in my strength”. There are countless burdens that the camel may bear; the burden of suffering, the pursuit of knowledge and truth, the pursuit of all good things for themselves with no reward or recognition, the willful playing of the “fool” in order to gain wisdom, holding yourself to a higher standard for its own sake, taking on the death of all things you thought you knew, relinquishing all pride and ignorance for the sake of being better off for it,