and we're all gonna die'." Spike often nicknames people, both as insults and as terms of endearment; for example, he calls Dawn "Little Bit" or "the Niblet". Spike's classical romanticism also manifests in his frequent references to poetry, songs, and literature; on occasion he even waxes poetic on the nature of love, life, and unlife as being driven by blood, reasoning that blood is more powerful than any supernatural force because it is what separates the living from the dead. Frequently, the power of Spike's passions override his physical limitations. His pain tolerance, in particular, is exceptionally high due to his willingness to disregard physical discomfort in favor of his goals, interpersonal attachments, and general defiance of any limitation. Notably, when Glory tortures him to reveal the identity of the Key, he defies and insults her at every opportunity; privately, he later reveals in confidence that he would rather die than see Buffy hurt. In terms of his defiant nature, he often treats his vulnerability to the sun as simply an annoying inconvenience. He drives in broad daylight in vehicles with blacked-out windows (often listening to Punk Rock while he does so), and on several occasions travels outside during the day using only a blanket for cover. Since becoming a vampire, Spike's core personality trait of loyalty has occasionally been at odds with his resentment of being controlled. While he prefers to seem himself as a rebel against any kind of authority, he recognizes that his devotion has allowed others to manipulate him and, at times, for him to put self-imposed limits on himself for the sake of others. In an extreme example, Angel was able to manipulate Spike's allegiance based on his attachment to Drusilla; in a less extreme example, he often modifies his crass tendencies around Dawn to keep from disappointing Buffy, though he ceases when she is not around. Like many characters in the series, Spike has battled depression at times; however, this was less a tendency towards self-pity or a psychological character trait than a reaction to new limitations. After being 'chipped' by the Initiative, Spike's inability to act out violence put him at odds with his desire to resist control and authority, and he became sullen when the pain inflicted by the chip was simply too powerful to resist. Upon realizing that he could still battle (and kill) demons and other supernatural creatures, his confidence