And then, the Earth being small, mankind will migrate into space, and will cross the airless Saharas which separate planet from planet and sun from s… - William Winwood Reade

If Christianity were true religious persecution would become a pious and charitable duty: if God designs to punish men for their opinions it would be an act of mercy to mankind to extinguish such opinions. By burning the bodies of those who diffuse them many souls would be saved that would otherwise be lost, and so there would be an economy of torment in the long run. It is therefore not surprising that enthusiasts should be intolerant.

It may safely be asserted that the art of war will soon be reduced to a simple question of expenditure and credit, and that the largest purse will be the strongest arm.

The essence of religion is inertia; the essence of science is change. It is the function of the one to preserve, it is the function of the other to improve. If, as in Egypt, they are firmly chained together, either science will advance, in which case the religion will be altered, or the religion will preserve its purity, and science will congeal.