Here's why:
* He is a disillusioned aristocrat: La Harpe is a nobleman who feels betrayed by his friend, the Count of Monte Cristo, who was unjustly imprisoned. He feels lost and purposeless after this betrayal.
* He is easily swayed: He is influenced by others, particularly by the Count's manipulative tactics. La Harpe's actions are often driven by his desire for revenge and a desire to feel powerful.
* He is ultimately a tragic figure: While he initially seeks revenge, he eventually realizes the futility of his actions and the pain he has caused. His search for fulfillment leads him to a life of misery and ultimately to his demise.
In conclusion, Bernard de La Harpe's search is not about finding a specific object or goal but about trying to find his place in the world and achieve happiness after being deeply hurt by betrayal. He is ultimately a tragic figure who fails to find the fulfillment he seeks.