Chicago Ideas Week had no shortage of inspiration on Thursday. From a look into the potential cures of cancer from leading researchers and physicians to a surprise performance of “C.R.E.A.M.” from Ghostface Killah, the Chicago school of thought was front and center. The day was filled with amazing Talks, Conversations and Labs—here are the five most memorable quotes we heard from all of them.

“Sometimes in the middle of your career, you lose yourself.”

At Thursday night’s Hip-hop: The Essential American Art Form Talk, legendary rapper Ghostface Killah sat down with Touré for a conversation on his career and the future of hip-hop overall. He reflected on a medley of things, including turning points in his life, getting sober and the death of Ol’ Dirty Bastard.

“I did not start this movement. This movement is hundreds of years old.”

Alicia Garza is one of the most influential leaders working in the United States today—but you’ve probably never heard of her. She is a Co-Founder of the Black Lives Matter movement, and she broke down how she manages to lead a cause with such a passionate following at the marquee leadership Talk.

“We’re not trying to replace humanity with robots. The question is, can we use robotics to help enhance humanity?”

At The Implications of Artificial Intelligence Conversation, artist and roboticist Alexander Reben dug into how humans and robots can work side-by-side for the good of humanity while debunking the myth that such could lead to its destruction.

“While money helps I actually need jobs. It’s much easier to hand someone a check and walk away.”

Former Secretary of Education Arne Duncan got real at the Leadership Talk on Thursday night as he criticized the way in which government organizations help vulnerable communities, particularly in Chicago.

“People underestimate the importance of self critique…you should do a lot more deleting than saving.”

At the hip-hop Talk, renowned producer Young Guru gave a great piece of advice on doing creative work, and what you need to do in order to produce a quality product.