America's Sixth President Perfectly Summed Up Problems with Islam in 1 Sentence John Quincy Adams, the sixth president of the United States and the only president to serve in Congress subsequent to his presidency, often spoke out against slavery and famously defended the slaves in the mutiny trial of the Amistad.
His hatred of slavery led him to strong beliefs about Islam and its followers, in no small part because many of the slaves brought to America were purchased in markets run by "you guessed it" Muslims.
"The natural hatred of the Mussulmen towards the infidels is in accordance with the precepts of the Koran," wrote President Adams.
The statesman understood that hatred to be one of the key differences between Islam and Christianity.
"The fundamental doctrine of the Christian religion is the extirpation of hatred from the human heart," continued Adams.
"It forbids the exercise of it, even towards enemies."