The cause of war is not failure to choose the one super-peaceful religion.
All religions lead to peace, for people who engage them sufficiently.
Or more accurately, developing a healthy spirituality tends to make every person who does that, feel connected with and loving towards, the world.
It’s just that that’s not an easy or simple path for most people. And most religions do not do a very good job at leading very many people down that path.
The path to world peace involves transforming the resigned and cynical conversations listed above into truer conversations.
e.g.:
“What religion should all human inhabitants of Earth practice in order to eradicate wars and achieve world peace?”
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It’s not a matter of choosing a religion.
“Never happen,no profit in peace.”
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Profit, especially ever-increasing profit, is an idea that ultimately leads to suffering, violence, and the destruction of our own planet. It’s just an idea. At some point, the destruction of our planet will make it obvious even to the most dense that profit-mindedness is an illusion and a destructive mistake.
”... world peace. There’s no such thing.”
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There is such a thing as war, environmental destruction, thermonuclear weapons, etc. But there was not always, and there does not always have to be.
“Humans will always find some way to divide themselves and fight. That’s what we do.”
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There are different ways to stand up for oneself. Most involve talk rather than violence. Violence is the worst way, and the last result of a wise adult. If we only accepted wise adult leaders, there might be no wars.