A simple translation of the Upanishad containing the original text in Devanagari, transliteration of each shloka, and word-for-word English rendering followed by a running translation and notes based on Shankaracharya's commentary.
When we can attach the mind to -- or detach it from -- the sense at our will, we shall really possess character. Then alone we shall have taken a long step towards freedom; before that, we are mere machines.
-Swami Vivekananda