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

Explanation

This compares the life of an uneducated person to the tail of a dog, implying that it serves no practical purpose. It suggests that lacking education renders an individual ineffective and vulnerable, much like a dog's tail that neither provides coverage nor protects from insects' bites. The teaching emphasizes the value of education in equipping individuals with knowledge and skills that are essential for personal growth, self-protection, and navigating life's challenges successfully.