i think the thing i love about sirius’s name is the complete comparison and the way it ties in with the ‘we’ve all got light and dark inside of us’ quote?? i mean
sirius = the brightest star in the earth’s night sky. blindingly so. intense. burns so fiercely. enticing.
black = the darkest colour due to the absence or complete absorption of light. deep. all-consuming.
both his first and his last name are extremely intense for different reasons and yet are at two completely different ends of the spectrum?? like the conflicting nature of his personality, two sides of the same coin.