https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13991115Edit ImageSaveSaveEditCropCustom TextFour heads of men who each exhibit one of the four temperaments: (clockwise from top left) lymphatic, sanguine, bilious, and nervous. Engraving by W. Johnson and A.K. Johnson, early 19th century.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 873 x 1200 px | 300 dpiLarge JPEG 2510 x 3451 px | 300 dpiFree DownloadFour heads of men who each exhibit one of the four temperaments: (clockwise from top left) lymphatic, sanguine, bilious, and nervous. Engraving by W. Johnson and A.K. Johnson, early 19th century.More