Public buses in the main centres could sport controversial atheist messages early in the New Year.
The New Zealand Atheist Bus Campaign was launched on Thursday with the aim of raising $10,000 in public donations to fund bus ads.
The ads created a storm when they ran on the London Underground and British buses earlier this year.
The ads read: "There's probably no God. Now stop worrying and enjoy your life."
Similar ads have run in the United States, Canada, Italy, Spain, Australia, Finland and Germany.
Campaign spokesman Simon Fisher says they will provoke discussion on religion and take away the stigma of atheism.
Bus operators have provisionally approved the ads but still have final right of refusal before running them, he says.
The launch prompted mixed reactions.
Fisher says donations are rolling in, but so are abusive emails from opponents.
However, messages threatening that Fisher will "go to hell" do not really bother the committed atheist who expected the campaign to be "a bit" controversial.
"It's completely understandable," he told Radio New Zealand.
"Religion is a very powerful influence. We are brought up from children to believe in certain things. Indoctrination is a strong thing."
Fisher says he thinks it is as much a statement of faith to say that there is definitely no God, as it is to say there is a God.
"The chances of there being a God - it's not really worth putting any weight on it in day-to-day life."
In the 2006 census, 34.7% of New Zealanders said they had no
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