Experience
Historians who had been allowed access to the "Monster Vaults" of the databanks in the Doctor's TARDIS observed that Abzorbaloffs sought the thoughts and experiences of other lifeforms as their own thoughts and experiences were "profoundly dreary". (PROSE: The Monster Vault [+]Loading...["The Monster Vault (novel)"]) "Victor Kennedy" sought to absorb the Tenth Doctor's experience knowledge. (TV Love & Monsters [+]Loading...["Love & Monsters (TV story)"])
Ruby Sunday once claimed that all the Doctor wanted was "to experience every brilliant thing that's ever happened", noting that she was coming along for the ride. (PROSE: Who's the Doctor? [+]Loading...{"page":"6","1":"Who's the Doctor? (short story)"})