“Between the lowest and the highest degree of spiritual and corporal perfection, there is an almost infinite number of intermediate degrees. The succession of degrees comprises the universal chain. It unites all beings, ties together all worlds, embraces all the spheres.”
“If someone ever demonstrated that the soul is material, they should not be alarmed; should we not admire the power which gave the material the ability to think?”— Charles Bonnet (1769), Regeneration Philosophy [2]
“As compared with the evolutionary hypotheses which had already been put forward by Maupertuis, Diderot, and Robinet, these speculations of Bonnet (Philosophical Palingenesis, 1770) were obviously crude and retrogressive.”— Arthur Lovejoy (1933), The Great Chain of Being [1]
“Nature seems to make a great leap in passing from the vegetable to the fossil [i.e. rock]; them are no bonds, no links known to us, which unite the vegetable and the mineral kingdoms. But shall we judge of the chain of beings by our present knowledge? Because we discover some Interruptions, some gaps in It here and there, shall we conclude that these gaps are real? The gap that we find between the vegetable and the mineral will apparently someday be filled up. There was a similar gap between the animal and the vegetable; the polyp has come to fill it and to demonstrate the admirable gradation there is between all beings”— Charles Bonnet (1764), Contemplation of Nature; cited by Arthur Lovejoy (1933) in The Great Chain of Being (pg. 233)