The speaker suggests that becoming a father, symbolized here by "a little boy," is a unique and powerful experience that can profoundly shape a man's character and sense of purpose.
"A little boy is the only thing God can use to make a man": This phrase implies that the journey of raising a child has a divine aspect and is instrumental in the growth and development of a man.
In essence, this quote celebrates the transformative power of fatherhood and the significant role it plays in a man's life. It suggests that the responsibilities and joys of nurturing and guiding a child can lead to personal growth, maturity, and a deeper understanding of one's purpose in life.