Love and sacrifice could be main themes. In many novels, a red heart can symbolize deep love or a passionate spirit, which might lead to characters making sacrifices for their beliefs or loved ones.
Another possible theme is redemption. The red heart in the novel could stand for a character's inner goodness that is trying to redeem themselves from past mistakes. They strive to become a better person throughout the story, driven by the essence of that red heart.
Perhaps the theme of sacrifice is present in 'the heart novel'. Characters may have to give up something they cherish, like a dream or a relationship, for a greater good. And social inequality might be another theme, showing how different characters are affected by the social structure in the story.
It could be about redemption. If the characters are 'in the red', whether it's morally or financially, they may strive to redeem themselves. For example, if they have debts, they try to pay them off, or if they've made moral mistakes, they look for ways to make amends.
I'm not sure specifically as I haven't read the exact 'the red heart novel'. But often in novels, there could be a protagonist who is the central figure with the red heart, either literally or metaphorically, driving the story forward.
One possible main theme could be love. In many novels, love often plays a central role, whether it's romantic love between characters or love within a family or community. Another theme might be the unique Sardinian culture. The setting of Sardinia can bring elements like local traditions, values, and ways of life into the story.
One main theme could be survival. The characters are likely facing extreme conditions at sea, which forces them to fight for their lives.
One main theme could be cultural identity. It might explore how characters in the novel are shaped by their cultural background. Another could be the concept of change, perhaps in relation to the society depicted in the story.
One of the main themes is probably the exploration of human - animal relationships. It shows how humans treat animals and what that says about their own humanity.
Courage is likely a main theme. The title itself suggests that the characters have fearless hearts, so they must be showing courage in different situations.
One of the main themes is love. It explores different forms of love, like the passionate love between the main characters. Another theme could be self - discovery. The characters often go through a journey to find out who they really are. And also, there might be a theme of freedom as the characters strive to break free from various constraints in their lives.
Well, in this novel, the theme of disillusionment is quite strong. The characters experience disenchantment with the world around them, whether it's love, friendship or society in general. And the theme of the search for truth is also there, as they dig deeper into the reality of their lives and the people around them.