By Means of the Sun is a photography project that includes analogue and digital images, taken or simply selected by Andrea Ferrari, made for scientific or creative purposes, produced by a camera or direct chemical modification of the film, objectively clear or almost abstract, and even drawings, drawings that, through the mediation of the lens, themselves turn into photographs. This book deftly reflects the current state of photography, one that is post-digital and postmodern, omnivorous and protean. Beginning with the work of William Henry Fox Talbot to whom this project is dedicated, starting with its title, Ferrari's wide-ranging sequence of images touches on themes as vast as the beginnings of photography and the origin of the world, drawing as a link between image and writing, and the egg as an archetypal form.