He was speaking at a felicitation at Temple Trees today (23) of the youth who have successfully completed projects of the National Youth Services Council.
The PM said a repeat of the war would not be allowed, and noted that achieving development targets would not be possible without peace.
If anyone tries to provoke racism or religious extremism that should be stopped immediately, he said.
No religion promotes religious hatred
Wickremesinghe said no religion teaches promoting religious hatred, adding that Lord Buddha had described how a person could become a pariah or a Brahmin.
Hinduism, Islam and Christianity too, have similar teachings, he said.
Speaking further, the PM pointed out that Indonesia, Thailand and Vietnam that were way behind in 1983 have surpassed Sri Lanka today.
Bangladesh is almost on par, while Myanmar, Afghanistan, Laos and Cambodia are behind us, he said.
Meanwhile, Muslims allege attacks against mosques and their business establishments have intensified recently.
The government claims these to be an organized attempt to set the Muslims against the government.