I think It's none other than my heart that covers one's eyes. To see, hear, think, and speak as the mind pleases. Mistakes can happen, and some people focus only on themselves and say things they shouldn't say to someone. When someone doesn't live blind anymore and one day can see the real world with one's own eyes, will feel deceived and feel anger and futility etc. I wanted to say that if look at the world with the eyes of heart, Can't see the reality.