Jaekyung Lee - Teachers Make a Difference - Sookja Baek

The speaker pays tribute to his mother, Sue, a former elementary school teacher from South Korea, who greatly influenced his life. She set high expectations and provided unwavering support, helping him grow intellectually, socially, emotionally, morally, and spiritually. Her wishes for him to study at a world-class university and become a beacon of light for humanity have shaped his journey. Although she passed away, her legacy of education, inspiration, and aspiration continues to guide him.

What does the teacher mean by wanting to be a 'beacon of light for humanity'?

What message does the teacher want to convey to his mother?