Dr. Sadao Hoki is a prominent character in the story "The Enemy" written by Pearl S. Buck. He is a highly skilled and renowned Japanese surgeon who has studied and practiced medicine both in Japan and in the United States. Dr. Sadao is depicted as a complex and multifaceted character, possessing various admirable qualities.

Intelligence and Expertise:
Dr. Sadao Hoki is an exceptionally intelligent and knowledgeable individual. He has acquired his medical expertise through rigorous education and extensive experience. His remarkable understanding of medical science enables him to perform intricate surgeries and save lives. Moreover, his time spent studying in America has broadened his horizons, allowing him to incorporate innovative Western medical techniques into his practice.

Humanitarian and Compassionate:
Despite the prevailing wartime tensions between Japan and the United States, Dr. Sadao's compassionate nature transcends national boundaries. He values human life above all and is genuinely concerned about the welfare of his patients. He refuses to discriminate against anyone, irrespective of their nationality or background. This is evident when he saves the life of an injured American prisoner of war, despite the potential consequences and the risk it poses to his own safety.

Conflicted Loyalties:
Dr. Sadao finds himself torn between his loyalty to his country and his moral obligations as a healer. As a Japanese citizen, he is expected to prioritize his allegiance to Japan over everything else. However, his encounters with the wounded American soldier challenge these loyalties. He grapples with the decision of whether to turn the soldier over to the authorities or protect him, understanding the consequences of aiding the enemy.

Bravery and Resilience:
Dr. Sadao demonstrates immense bravery and resilience in the face of adversity. He risks his own safety and reputation by harboring the injured American soldier in his home, despite the constant threat of discovery. His determination to protect the soldier showcases his courage and willingness to endure personal hardships for the sake of humanity.

Intellectual Curiosity:
Dr. Sadao's time studying in America has instilled in him a curiosity and open-mindedness uncommon among his peers. He embraces new ideas and is willing to challenge traditional Japanese customs and beliefs. This intellectual curiosity is demonstrated through his interest in scientific advancements and his willingness to incorporate Western medical techniques into his practice.

Conclusion:
Dr. Sadao Hoki is a highly intelligent, compassionate, and morally conflicted character in "The Enemy." His exceptional medical skills, humanitarian nature, bravery, resilience, and intellectual curiosity make him an intriguing and memorable protagonist. Despite the constraints imposed by society and wartime circumstances, Dr. Sadao remains committed to his ethical principles and the pursuit of saving lives, regardless of nationality.