https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13961170Edit ImageSaveSaveEditCropCustom TextA surgeon in his workroom extracing stones from a man's head; symbolising the expulsion of 'folly' (insanity). Gouache painting by Ginsle , 1806, after G. Dou.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 909 x 1200 px | 300 dpiLarge JPEG 2423 x 3198 px | 300 dpiFree DownloadA surgeon in his workroom extracing stones from a man's head; symbolising the expulsion of 'folly' (insanity). Gouache painting by Ginsle , 1806, after G. Dou.More