The life of an uneducated man is as useless as the tail of a dog which neither covers its rear end, nor protects it from the bites of insects.

The aphorism argues that education is not ornamental but functional: without cultivated knowledge and judgment, a person fails to fulfill basic human purposes, just as a dog’s tail (in this image) fails to perform the practical tasks one might expect of it. The deliberately coarse metaphor is meant to shock the listener into valuing learning as a form of protection and capability—socially, morally, and materially. In the broader niti (conduct/policy) tradition, “education” often implies disciplined training in discernment, self-control, and ethical reasoning, not merely literacy. The line thus frames ignorance as a kind of vulnerability and wasted potential, emphasizing utility and competence as measures of a life well lived.