Charles Nordmann 
Einstein and the universe: A popular exposition of the famous theory [EPUB ebook] 

Nordmann has presented Einstein’s principle in words which lift the average reader over many of the difficulties he must encounter in trying to take it in.
Remembering Goethe’s maxim that he who would accomplish anything must limit himself, he has not aimed at covering the full field to which Einstein’s teaching is directed. But he succeeds in making many abstruse things intelligible to the layman.
Einstein’s theories have brought about a profound revolution in science. In their light the world seems simpler, more co-ordinated, more in unison.