COSMOS: A Sketch of the Physical Description of the Universe - Tapa blanda

In the late evening of an active life I offer to the German public an astronomy guide, whose undefined image has floated before my mind for almost half a century. I have frequently looked upon its completion as impracticable, but as often as I have been disposed to relinquish the undertaking, I have again -- although perhaps imprudently -- resumed the task. This work I now present to my contemporaries with a diffidence inspired by a just mistrust of my own powers, while I would willingly forget that writings long expected are usually received with less indulgence.