Which character states the need to keep trying after initial failures?

Vincent embodies the theme of perseverance and determination throughout the narrative of "GATTACA." He is portrayed as a character who, despite being genetically engineered to be inferior and facing societal discrimination, continuously strives to achieve his dreams of traveling into space. His journey reflects the importance of resilience, as he encounters numerous obstacles and setbacks. Vincent's unwavering commitment to his goals underscores the message of not giving up in the face of adversity. This characteristic resonates strongly with the film's overarching themes of willpower and the rejection of genetic destiny. Other characters may display their own strengths or qualities, but Vincent's specific narrative arc highlights the necessity of persistence despite initial failures, making him the fitting choice for this question.