`The Essence Of Aikido' is a book of Morihei Ueshibas teachings as translated by John Stevens. It is the companion book to `Budo' also by Morihei Ueshiba but this one has more doka (songs of the path) and calligraphy, as well as numerous photos of O Sensei. Part 1 looks at Aikido cosmology, part 2 contains the doka in kanji, roma-ji and English, part 3 has calligraphy, part 4 looks at misogi purification and part 5 has extensive photography of O Sensei practising various techniques. Some of the philosophy is hard to grasp from an initial reading and this is good to come back to as you progress in your understanding and Aikido training. The information enclosed isn't essential for the physical aspect of Aikido training, but makes for an all round understanding of the martial art and adds to your overall training and development. This is probably best come to after you have been training for a while and wish to develop Aikido ideas further. This is an excellent source of photography of O Sensei and would make up the purchase price for this aspect of the book alone. A worthy addition to any Aikido bookshelf.
Feel free to check out my blog which can be found on my profile page.