Bonnet, Charles de, Swiss naturalist and philosopher, born at Geneva; his studies as a naturalist gave a materialistic cast to his philosophy; though he did not deny the existence of mind, still less that of its sovereign Author, he gave to material impressions a dominant influence in determining its manifestations (1720‒1793).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Bonner, Edmund * Bonnet-piece