In the book As A Man Thinketh James Allen explains the power of thought and how our thoughts shape our lives, for better and for worse. Therefore, by mastering our thoughts, we can change our circumstances and achieve the life that we want. James Allen explains how thoughts form realities and how we can master our thoughts. First published in 1903 this book is now a classic and its teachings are as relevant as ever. Everybody should read this book. This edition presents the original English text together with the Esperanto translation, side by side. Reading parallel texts in Esperanto and in their native language is ideal for Esperanto learners who want to acquire vocabulary, expressions and grammatical constructions. Parallel texts in two languages eliminate the need to resort to external resources, such as dictionaries, and the reader can concentrate on reading, without losing comprehension. Esperanto is an artificial language created by Dr. L.L.Zamenhof, who laid the foundations in the 19th century. It is a very easy language to learn and it is intended to be universal and neutral, which makes it very suitable for international communication. There are Esperanto speakers all over the world, who often travel and meet without language barriers. Esperanto is also increasing its presence on the internet.