Such is the weakness, such the perversity, of the human race that it is better, no doubt, for it to be subject to all conceivable superstitions, provided they be not murderous, than to live without religion.
What is toleration? It is the appurtenance of humanity. We are all full of weakness and errors; let us mutually pardon each other our follies—it is the first law of nature.
We are all atheists about most of the gods that humanity has ever believed in. Some of us just go one god further.
To make a success of humanity, we must profit by the lessons of those below us in the animal kingdom.
The invention of printing and the Reformation are and remain the two outstanding services of central Europe to the cause of humanity.
Superstition is a part of the very being of humanity; and when we fancy that we are banishing it altogether, it takes refuge in the strangest nooks and corners, and then suddenly comes forth again, as soon as it believes itself at all safe.
Men who are occupied in the restoration of health to other men, by the joint exertion of skill and humanity, are above all the great of the earth. They even partake of divinity, since to preserve and renew is almost as noble as to create.
It is not in giving life but in risking his life that man raises himself above the animal; this is why throughout humanity, superiority has been granted not to the sex that gives birth but to the one that kills.
Ideas consume the ages as passions consume men. When man is cured, humanity may possibly cure itself.