The "three bright and happy stars" in the poem can be understood as the part of the little brother's soul that shines with beauty, light and hope. The Gentle and Silent Soul depicts the inner world of my little brother, in which his feelings, dreams and happiness all quietly inhabit.
Generally speaking, this poem is a hymn to innocence, beauty and hope, and it is also a praise to young and innocent life. It reminds us that children's souls are so pure and transparent that they are the future and hope of the world. The author expressed his blessing and love for his little brother in affectionate language, which made us think and feel the beauty and dignity of life.