Where does "all my ego comes from my inferiority complex" come from?

This sentence comes from the confession of artist Ma Liang, and the original text is:

All my ego comes from my inferiority complex, and all my heroism comes from my weakness. I am eloquent because my heart is full of doubts, and I am affectionate because I hate my ruthlessness. Nothing in this world is for nothing. Standing in the light, there will be shadows behind you. There is silence in the middle of the night because you haven't heard the sound yet.

The Italian writer italo calvino's Invisible City is similar to this sentence, as follows:

All my conceit comes from my inferiority complex, all my heroism comes from my inner weakness, and all my speciousness comes from my inner doubts. I pretend to be heartless, but I really hate my deep feelings. I thought the meaning of life was wandering around in exile, but it was just to cover up that I had not found a place to stop.

Extended data:

Confessions records the childhood memories of the artist Ma Liang, and bears Ma Liang's persistent pursuit of ideal exploration. The book not only records childhood memories, but also shares the feelings of artistic creation such as photography and painting, as well as deep thinking about ideals and life.

He unreservedly displayed his favorite works in recent ten years, including paintings, photography, installations, essays and poems. This book contains more than 80 works by Ma Liang, including manuscripts, sketches, paintings, photos, installations and collections.

In the last chapter of the book, I have been to every dream of your childhood, Ma Liang has a wonderful and sincere interpretation of his artistic creation: kindness and beauty sometimes grow in the ugliest soil, and we must believe this, especially in this era.