The jostling of young minds against each other has this wonderful attribute, that one can never foresee the spark, nor predict the flash. What will spring up in a moment? Nobody knows.
I believe, sir, in all the progress. Air navigation is the result of the oceanic navigation: from water the human has to pass in the air. Everywhere where creation will be breathable to him, the human will penetrate into the creation. Our only limit is life.
There are souls which, crab-like, crawl continually toward darkness, going back in life rather than advancing in it, using what experience they have to increase their deformity, growing worse without ceasing, and becoming steeped more and more thoroughly in an intensifying wickedness.
These are dark radiances. They have no suspicion that they are to be pitied. Certainly they are so. He who does not weep does not see. They are to be admired and pitied, as one would both pity and admire a being at once night and day, without eyes beneath his lashes but with a star on his brow.
Babylon violated diminishes Alexander; Rome enslaved diminishes Caesar; massacred Jerusalem diminishes Titus. Tyranny follows the tyrant. Woe to the man who leaves behind a shadow that bears his form.
There is no supernatural, there is only nature. Nature alone exists and contains all. All is. There is the part of nature that we perceive, and the part of nature that we do not perceive. ... If you abandon these facts, beware; charlatans will light upon them, also the imbecile. There is no mean: science, or ignorance. If science does not want these facts, ignorance will take them up. You have refused to enlarge human intelligence, you augment human stupidity. When Laplace withdraws Cagliostro appears.
Without at all invalidating what we have just said, we believe that a perpetual remembrance of the tomb is proper for the living. On this point, the priest and the philosopher agree: We must die.