Ichiro Ozawa, secretary general of the Democratic Party of Japan, criticized Christianity on Tuesday, saying the religion is "exclusive and self-righteous" and that Western society is "stuck in a dead end."

Ozawa also said "Islamism is also exclusive, although it's somewhat better than Christianity" regarding exclusiveness.

The comments will no doubt cause a stir as he is the most influential figure in the ruling party.

He made the comments to reporters after meeting with Yukei Matsunaga, chairman of the Japan Buddhist Federation, a body of 102 Buddhist sects and groups, in Koyacho, Wakayama Prefecture.

Christianity "is an exclusive, self-righteous religion. Western society, whose background is Christianity, has been stuck in a dead end," Ozawa said.

"Modern society has forgotten or lost sight of the sprit of the Japanese people," he said. "Buddhism teaches you how humans should live and how the conditions of the mind should be from a fundamental standpoint."