They however enjoined Nigerians to put all hands on deck towards ensuring the unity of the country.
They made these clarion calls while speaking with State House correspondents shortly after they were honoured with the nation's centenary awards at the Presidential Villa, Abuja.
Former President, Chief Olusegun Obasanjo, said for Nigeria to have survived the first 100 years despite the various challenges of nation building, the country would not break up.
"The award means Nigeria is making progress. If Nigeria survived the first 100 years, it means that Nigeria has come to stay," he said.
On his own part, former military leader, Gen. Abdusalam Abubakar (retd.) stated that nothing can tear the nation apart.
He explained that, "Nigeria has come a long way and we thank God. The future generation should try and do better than what we have done and keep this country together," he said.
Another former military leader, Gen. Muhammadu Buhari, said it was a good thing to be recognised by one's country.
He said, "The award means a lot to having been qualified to be recognised by Nigerians. My wish for Nigeria is security."
The former Head of the Interim National Government, Chief Ernest Shonekan, said the award would spur him into working harder for the nation.
"The award means a lot to me. It makes me want to work harder for the unity and progress of the country," Shonekan said.
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