56. He whose mind is not shaken by adversity, who does not hanker after pleasures, and who is free from attachment, fear and anger, is called a sage of steady wisdom.
57. He who is everywhere without attachment, on meeting with anything good or bad, who neither rejoices nor hates, his wisdom is fixed.
from “II Sankhya Yoga, Bhagavad Gita (By Sri Swami Sivananda)”