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.
Renunciation is the background of all religious thought wherever it be, and you will always find that as this idea of renunciation lessens, the more will the senses creep into the field of religion, and spirituality will decrease in the same ratio.
-Swami Vivekananda