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Last Updated on June 19, 2019, by eNotes Editorial. Word Count: 455

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In order to determine the most important quotes from Wildcard by Marie Lu, one must understand the central theme or message of the novel. As a follow-up to Lu's Warcross, Wildcard builds on the themes of technology and privacy that were established in its predecessor's work. The text is largely about Emika's conflict over her love for Hideo and her disgust at his NeuroLink creation, which is essentially mind-control. It is a classic sci-fi dystopian piece that examines how far human beings are willing to go in order to regain what we have lost (i.e., Hideo's younger brother) and how much privacy might we sacrifice in exchange for security.

Based on this discussion, I have provided a list of quotes below that I believe are very important in analyzing and discussing these themes. For each, I will provide a brief description of what the quote means.

That's the difference between the real and the virtual. Reality is where you can lose the ones you love. Reality is the place where you can feel the cracks in your heart.

This quote demonstrates Emika's feelings about the online existence in which most people in the world (98 percent, to be exact) are immersed. Emika realizes that the virtual reality of Warcross and NeuroLink have no real risks, which is what makes it so attractive. Conversely, the physical world poses real risks, both physical and psychological.

Every problem has a solution. But after every solution, there's a new problem to tackle, some new challenge to take on.

This quote exemplifies Emika's perspective on how Hideo's invention is a major problem, yet she knows it will only be replaced by another problem. She understands that this technology has benefits and downsides, and even if she helps destroy it to rid the world of those negative consequences, she knows it will not fix the world forever. She understands that life is full of challenges at a never-ending rate.

Maybe I should feel like a hero. But I don’t. It’s always easier to destroy than to create.

This quote represents Emika's complicated feelings about her status as a hero. While many laud her role in destroying NeuroLink and saving the people from this intrusive technology, Emika doesn't share their positive sentiment. This is likely complicated because of Emika's romance with Hideo, but she also brings up a complex issue. While she may have done the right thing for the sake of others, Emika ultimately did something very simple. On the other hand, Hideo invented an advanced algorithm to power NeuroLink; his invention might have been "evil" in some aspects, but his actions required far more skill and creativity that Emika's—which is the point she makes in this quote.