Adolf Hitler Tolerance Quotations

Only in the Roman Empire and in Spain under Arab domination has culture been a potent factor. Under the Arab, the standard attained was wholly admirable; to Spain flocked the greatest scientists, thinkers, astronomers, and mathematicians of the world, and side by side there flourished a spirit of sweet human tolerance and a sense of purist chivalry. Then with the advent of Christianity, came the barbarians.

...absolute intolerance also provides long growth.

The future of a movement is conditioned by the fanaticism, yes, the intolerance, with which its adherents uphold it as the sole correct movement, and push it past other formations of a similar sort.