What does Charlie mean when he talks about having two minds?

When Charlie refers to having "two minds," he is expressing the internal conflict between his pre-surgery intellectual capabilities and his post-surgery emotional experiences. This duality reflects the struggle between his heightened intelligence and the simpler, more innocent perspective he initially held. It highlights the tension between his newly acquired knowledge and the emotional complexities that come with it, revealing the challenges of reconciling these two different aspects of his identity.