This is Sasuke Uchiha's famous saying, which comes from Naruto. It probably means that Sasuke no longer cares about justice and evil. He will do whatever it takes to get revenge, and finally he loses himself.

The above is just a summary, and some netizens have analyzed it in detail, as follows:

Closing his eyes means that he no longer cares about what is justice and evil. He found that to achieve his goal, he had to give up his identity, even his humanity. The whole sentence is that Sasuke thinks that he can do whatever it takes to achieve his goal, even if he has to do whatever it takes. This shows Sasuke's loss of self and the collapse of human nature. In fact, from the previous plot, we can see that Sasuke is a somewhat autistic person and some are unsociable. He doesn't know how to express his feelings and how to vent them. When his emotions reached the limit and collapsed, he began to feel that no one in the world could help him, and he could only go on alone, so he lost himself. This is a tragic figure.