The last thing Sirius will ever do is downplaying his intelligence to please another person
His intelligence is his most valued trait. There is nothing else Sirius values more about himself than his mind (except his sense of loyalty) because from his mind comes his principles and the ability to see through his family's bullshit.
He is arrogant about it (literally thinking he could outwit Voldemort).
He would run, after verbally cutting them down, from anyone who tried to make him downplay his intelligence.


















