Seas of blood have been shed for the sake of patriotism. One would expect the harm and irrationality of patriotism to be self-evident to everyone. But the surprising fact is that cultured and learned people not only do not notice the harm and stupidity of patriotism, they resist every unveiling of it with the greatest obstinacy and passion (with no rational grounds), and continue to praise it as beneficent and elevating.

The Complete Works of Count Tolstoy (ed. 1905)