That is the true definition of sin; when knowing right you do the lower, ah, then you sin. Where there is no knowledge, sin is not present.

Nothing but an imperious intellectual and moral necessity can drive into doubt a religious mind, for it is as though an earthquake shook the foundations of the soul, and the very being quivers and sways under the shock.

No philosophy, no religion, has ever brought so glad a message to the world as this good news of Atheism.

I have ever been the queerest mixture of weakness and strength, and have paid heavily for the weakness.

Men are at every stage of evolution, from the most barbarous to the most developed; men are found of lofty intelligence, but also of the most unevolved mentality; in one place there is a highly developed and complex civilisation, in another a crude and simple polity.

For centuries the leaders of Christian thought spoke of women as a necessary evil, and the greatest saints of the Church are those who despise women the most.

It is the duty of the followers of Islam to spread through the civilised world, a knowledge of what Islam means - its spirit and message.