Patanjali…

We are not going to change the whole world, but we can change ourselves and feel free as birds. We can be serene even in the midst of calamities and, by our serenity, make others more tranquil. Serenity is contagious. If we smile at someone, he or she will smile back. And a smile costs nothing. We should plague everyone with joy. If we are to die in a minute, why not die happily, laughing? (136-137)”
― Swami Satchidananda, Yoga Sutras of Patanjali