How does Caesar show his arrogance to the soothsayer?

Caesar demonstrates his arrogance toward the soothsayer by dismissively ignoring the warning about the Ides of March, famously asserting that he is "as constant as the northern star." He believes himself to be above the omens and the advice of others, showing a lack of respect for the soothsayer's insights. This arrogance ultimately leads to his downfall, as he underestimates the significance of the warning and the danger surrounding him.