The theme of people doing anything to achieve power is supported by events like Sir Kay's claim to the sword and the Archbishop summoning the nobility to London.
The theme that some people will do anything to achieve power is supported by the detail of Sir Kay claiming that he rightfully obtained the sword.
Sir Kay's claim to the sword without rightful ownership signifies a drive for power by exploiting a situation or claim, showcasing a willingness to do anything to acquire power.
Additionally, the Archbishop summoning the nobility to London may also indicate using authority and influence to consolidate power, further supporting the theme.
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