At 68 years old Charlie Tawhiao has been around long enough to experience the resurgence of te reo.
"It was something that was dying out in the 1950s-60s. But now, for many, not having te reo is a real handicap," Tawhiao said.
"People of my generation started learning, but one of the obstacles you have to overcome is the feeling of 'I should know all this, but I don't'."
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The Ngāi te Rangi chairman said that trying to learn the native language as an adult Māori was particularly difficult - managing the feeling of failure that came when mistakes, which were a natural part of learning, happened.