The bad thing about all religions is that, instead of being able to confess their allegorical nature, they have to conceal it.

Scholars are those who have read in books, but thinkers, men of genius, world-enlighteners, and reformers of the human race are those who have read directly in the book of the world.

Means at our disposal should be regarded as a bulwark against the many evils and misfortunes that can occur. We should not regard such wealth as a permission or even an obligation to procure for ourselves the pleasures of the world.

He who lives to see two or three generations is like a man who sits some time in the conjurer's booth at a fair, and witnesses the performance twice or thrice in succession. The tricks were meant to be seen only once; and when they are no longer a novelty and cease to deceive, their effect is gone.

How is it possible that suffering that is neither my own nor of my concern should immediately affect me as though it were my own, and with such force that is moves me to action?

The little incidents and accidents of every day fill us with emotion, anxiety, annoyance, passion, as long as they are close to us, when they appear so big, so important, so serious; but as soon as they are borne down the restless stream of time they lose what significance they had; we think no more of them and soon forget them altogether. They were big only because they were near.

Consider the Koran... this wretched book was sufficient to start a world-religion, to satisfy the metaphysical need of countless millions for twelve hundred years, to become the basis of their morality and of a remarkable contempt for death, and also to inspire them to bloody wars and the most extensive conquests. In this book we find the saddest and poorest form of theism. Much may be lost in translation, but I have not been able to discover in it one single idea of value.