Fundamentals of the Wudang Sword Method - trans by Scott Rodell

心空歌
歌曰。手心空。使劍活。足心空。行步捷。頂心空。身眼一。

Xīn kōng Gē
Gē yuē. Shǒuxīn kōng. Shǐ jiàn huó. Zú xīn kōng. Xíng bù jié. Dǐng xīn kōng. Shēn yǎn yī.

Song of Empty Mind
The song says
With palm empty, the sword is lively.
With the center of the foot empty, the footwork is nimble.
With the topknot empty, the entire body is one.

Commentary and Notes: This short “song” describes the body once one is free from premeditated action. Simply put, when one is not predisposed to use a certain cut, one is free to cut in any manner. Likewise, when one is not planning on stepping here or there, one will freely move anywhere. When one is not thinking ahead without attachment to a certain action of set of rules, but “empty” in the moment, one is free from dogmatic actions, and can clearly see without the filters of habit and prejudice moving with true freedom.
The topknot refers to a daoist hairstyle where long hair is wound up into a knot that sits atop the apex of the head, held in place by a peg. “Keeping the topknot empty” means not hanging the head, inclining the body forward, nor titling the head back, so that it is pulling the body backward off balance.

Quoted from-
Fundamentals of the Wudang Sword Method - Selected Translations with Commentary from a Manual of Chinese Swordsmanship

This and Rodell Laoshi's other books can be found at-
https://www.amazon.com/Scott-M.-Rodell/e/B001K8ZF56

Fundamentals of the Wudang Sword Method Trans by Scott Rodell

練劍歌 
頭腦⼼心眼如司令。
⼿手⾜足腰胯如部曲。
內勁倉庫丹⽥田是。
精氣神膽須充⾜足。
內外⼯工夫勤修練。
⾝身劍合⼀一⽅方成道。

Liàn jiàn gē
Tóunǎo xīnyǎn rú sīlìng.Shǒu zúyāo kuà rú bù qǔ.Nèi jìn cāngkù dāntián shì. Jīng qì shén dǎn xū chōngzú. Nèiwài gōngfū qín xiūliàn. Shēn jiàn hé yīfāng chéngdào.

Song of Sword Practice
The mind is like a commanding officer.The hands, feet, waist, hips, are like the troops.Internal power is stored in the dantian.Jing, qi, shen and courage must be abundant.Internal and external skills must be practiced diligently. Then the body and sword become one achieving the dao.
Commentary and Notes:
In the last line of this verse, the term chéngdào (成道) can have a wide breadth of meaning. For those genuinely engaged in this sort of work, the concept of chéngdào should be clear. One possible alternative translation of this line is, “With body and sword becoming uniting, one achieves illumination.” Within Buddhism, chéngdào can express enlightenment or illumination.
Not that one is correct or better, rather perhaps not all are familiar with the meaning behind chéngdào. Reaching a state where the body and sword have united as one carries with it more than the idea of achieving great martial skill. Arriving at this state also bring with it a clarity and understanding of the world and the manner in which forces interact. In other words, there is a special understanding that comes from achieving great skill
If one wished to translate this line in a more common vernacular, it could be rendered, “with body and sword becoming one you get it.”

Quoted from -
http://www.amazon.com/Fundamentals-Wudang-Sword-Method-Swordsmanship-ebook/dp/B0155MS13A

Fundamentals of the Wudang Sword Method - a Manual of Chinese Swordsmanship Translation by Scott M. Rodell

This book is a must have for any practitioner of the Chinese sword arts. Scott Rodell is one of the foremost experts of the Chinese Jian and has 40+ years of experience he brings to the table in his commentary and translation. 

The layout of the book is useful as well, he leaves the classical Chinese, the pinyin and the English translation on the page together. I like that because it gives me the opportunity to see the character (I don’t speak Chinese) and look at the tone in Pinyin as well as see the translated meaning in English.

This is not a book for a novice, although it can benefit someone who has no experience, this book is really for the person who has some background in Chinese swordsmanship. The insight and depth of the commentary helps to elucidate some of the finer points of theory and usage. 

I believe the introduction about Li Jinlin the “Sword Saint”, the history of Wu Dang Sword and Chinese history lesson alone is worth the $6 price tag.