This translation captures the meaning and beauty of the twelve principal Upanishads, omitting a few passages. Original text is not given. An excellent version for the general reader.
The moment you fear, you are nobody. It is fear that is the great cause of misery in the world. It is fear that is the greatest of all superstitions. It is the fear that is the cause of our woes, and it is fearlessness that brings heaven in a moment.
-Swami Vivekananda