Should we feel regret for our mistakes?

Excerpt from Mr. Adnan Oktar's Live Conversation on A9TV dated February 16th, 2018

VTR: Should we feel regret for our mistakes?

ADNAN OKTAR: Of course we should; this is how one matures as a person. It is of vital importance. Making mistakes and correcting them, and ourselves along with it, is the purpose of our existence. For instance, a blacksmith shapes iron by repeatedly beating it, forging it into the desired form. It is the same with man; he sculpts himself like sculpting a stone, and from that raw, rough stone he carves out the smooth cubical stone. This also carries a Masonic symbolism. Freemasons call man a raw stone, which they sculpt continuously until they carve out a cube-shaped smaller stone. This is the primary quality of this world.