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.
My scientific work is motivated by an irresistible longing to understand the secrets of nature and by no other feeling. My love for justice and striving to contribute towards the improvement of human conditions are quite independent from my scientific interests.
Nature is sanative, refining, elevating. How cunningly she hides every wrinkle of her inconceivable antiquity under roses, and violets, and morning dew! Every inch of the mountains is scarred by unimaginable convulsions, yet the new day is purple with the bloom of youth and love.
Reason must approach nature with the view, indeed, of receiving information from it, not, however, in the character of a pupil, who listens to all that his master chooses to tell him, but in that of a judge, who compels the witnesses to reply to those questions which he himself thinks fit to propose. To this single idea must the revolution be ascribed, by which, after groping in the dark for so many centuries, natural science was at length conducted into the path of certain progress.
The shows of the day, the dewy morning, the rainbow, mountains, orchards in blossom, stars, moonlight, shadows in still water, andthe like, if too eagerly hunted, become shows merely, and mock us with their unreality.
Genius has infused itself into nature. It indicates itself by a small excess of good, a small balance in brute facts always favorable to the side of reason.