Can you please explain the meaning of Imam Ali’s saying or refer to any tafseer: "Your sickness is from you, but you do not perceive it and your remedy is within you, but you do not sense it. You presume you are a small entity, but within you is enfolded the entire Universe. You are indeed the evident book, by whose alphabet’s the hidden becomes manifest. Therefore you have no need to look beyond yourself. What you seek is within you, if only you reflect."

This hadith is indicating to the deeper meaning of what actually Human is , which is the True self.

If this part of us is fixed , the minimum would be seeing the remedy within and maximum would be knowing our Lord, by which the hidden becomes manifest.