Despite the fact that "Radiance" expresses a positive attitude towards life, the lyrics and musical elements are somehow tinged with some sadness. The sadness stems from the song's deep reflection on life and depiction of life's dilemmas. The melody and emotional ups and downs in the song also add to the listener's feelings about the song. Sentimentality is not negative, it is a kind of contemplation and realization of life that gives a deeper understanding of the frustrations and ups and downs in life.