Will Mark Brainiest** Read The Excerpt

Which stage of life does the playwright discuss in a positive fashion in this excerpt from As You Like It?
infancy, described as "mewling and puking in the nurse's arms"
childhood, described as "then the whining schoolboy, with his satchel/ and shining morning face"
young adulthood, described as "then a soldier/Full of strange oaths..."
maturity, described as "with spectacles on nose and pouch on side;"