Tranquillity--the first psychological quality taught at his caste-initiation to the Brahmin youth; much admired by Benjamin Disraeli because seldom met with in society; prized by Marcus Aurelius and his Stoic sect as the best of virtues--this is to be practised by those who would become philosophers and sought by those who would become saints. Yet for others, who must perforce stay, mix, and work in the world, it is not less valuable to smooth their path and reduce their difficulties. The first it does by putting men at their ease, the second by bestowing clearer sight. For them too it is the defense against rancour, the preserver of humour and peace, and, lastly, if they desire, the way to be in the world but not of it. As Lao Tzu wrote: "There is an Infinite Being which was before Heaven and Earth. How calm it is!"
-- Notebooks Category 24: The Peace within You > Chapter 2: Be Calm > # 96