Bruno Munari, Design as Art
This is by far the most inspiring book I head read in a very long time.
The author, Bruno Munari, an artist, designer and inventor, developed his craft and ideas at the time of the surrealist avant-garde and created all sorts of improbable works like a lamp made from a stocking and useless machines, lightweight mobiles that moved in the wind.
He argues that Design is linked to art, but that some ephemeral items, meant for larger consumption need to be designed more rather than be a fruit of divine inspiration, as their packaging, production cost, delivery cost and so on will bear in on whether they are successful products.
I cannot do justice to the genius who wrote the words. So I leave you with this excerpt and a recommendation to buy the book (whether kindle or paper) for your personal growth.