He spoke in the Dominican University's first and second convocation ceremonies in Ibadan, Oyo State.
Obi complained that the political framework was characterised by lawlessness and underdevelopment.
He argued that Nigeria's problems were caused by the country's political systems.
According to Obi, my primary structure is God, my secondary structure is humanity, and you are my structure because you trust in me and what I say.
"The current framework is one of criminality and underdevelopment. These constructions have destroyed the nation.
"Therefore, the issue is, do you wish to maintain the current structure or would you prefer a new one?
"If they claim that I provide unreliable numbers, they should provide their own." They cannot claim I provide incorrect statistics while failing to provide the correct ones."
The former governor of Anambra State was previously accused of lacking political structures.
Members of rival political parties stated that Obi lacked the necessary political apparatus to win the 2023 presidential election.