There are men who practice Titiksha, and succeed in it. There are men who sleep on the banks of the Ganga in the midsummer sun of India, and in winter float in the waters of the Ganga for a whole day; they do not care. Men sit in the snow of the Himalayas, and do not care to wear any garment. What is heat? What is cold? Let things come and go, what is that to me, I am not the body.
– Swami Vivekananda