I've said repeatedly that where we see terrorist organizations like al-Qaeda or ISIL, they have perverted and distorted and tried to claim the mantle of Islam for an excuse, for basically barbarism and death. These are people who kill children, kill Muslims, take sex slaves - there's no religious rationale that would justify in any way any of the things that they do.
The petition of persons under eighteen, praying that I would free all slave children, and the heading of which petition it appears you wrote, was handed me a few days since by Senator Sumner. Please tell these little people I am very glad their young hearts are so full of just and generous sympathy, and that, while I have not the power to grant all they ask, I trust they will remember that God has, and that, as it seems, He wills to do it.
Historically speaking, the Christian religion is nothing but a Jewish sect... After the destruction of Judaism, the extinction of Christian slave morals must follow logically... Ah, the God of the deserts, that crazed, stupid, vengeful Asiatic despot with his power to make laws!
We live in a very low state of the world, and pay unwilling tribute to government founded on force. There is not, among the most religious and instructed men of the most religious and civil nations, a reliance on the moral sentiment, and a sufficient belief in the unity of things to persuade them that society can be maintained without artificial restraints, as well as the solar system; or that the private citizen might be reasonable, and a good neighbor, without the hint of a jail or a confiscation.
Another success is the post-office, with its educating energy augmented by cheapness and guarded by a certain religious sentimentin mankind; so that the power of a wafer or a drop of wax or gluten to guard a letter, as it flies over sea over land and comes to its address as if a battalion of artillery brought it, I look upon as a fine meter of civilization.
Trusting in Him, who can go with me, and remain with you and be every where for good, let us confidently hope that all will yet be well. To His care commending you, as I hope in your prayers you will commend me, I bid you an affectionate farewell.
For how shall we fill people with blind faith in the correctness of a doctrine, if we ourselves spread uncertainty and doubt by constant changes in its outward structure? ...Here, too, we can learn by the example of the Catholic Church. Though its doctrinal edifice, and in part quite superfluously, comes into collision with exact science and research, it is none the less unwilling to sacrifice so much as one little syllable of its dogmas... it is only such dogmas which lend to the whole body the character of a faith.
Only greatly insolent people establish a religious law which is to be taken for granted by others, which should be accepted by everyone on faith, without any discussion or doubts. Why must people do this?
...it becomes clear that, given our diversity, no single religion satisfies all humanity. ... And since the majority does not practice religion, I am concerned to try to find a way to serve all humanity without appealing to religious faith.
The politicians and the religious leaders and the weapons scientists have been at it for a long time and they've made a thorough mess of it. I mean, we're in deep trouble.
If condoms and potentially microbicides can prevent millions of deaths [from AIDS], they should be made more widely available. I know that there are those who, out of sincere religious conviction, oppose such measures. And with these folks, I must respectfully but unequivocally disagree.