|| ya nisa sarvabhutanam tasyam jagarti samyami yasyam jagrati bhutani sa nisa pasyato muneh ||
That which is night to all beings, in that state a saintly person keeps awake. And that, in which all beings keep awake, is night to the enlightened seer.
People whose senses are uncontrolled and who are immersed in pleasure are asleep in the dark because they never think of the real aim of life. Unlike animals, human beings have the ability to discriminate between what is good and what not. If we misuse this quality to hanker after pleasures and prosperity, humans can be more harmful to society than any beast. Animals only take the food they need but people driven by greed create obstacles to the utilization of food or other materials by others.
A self-controlled person knows that all worldly pleasures, such as praise and prosperity, are coming and going, while God and the soul are eternal. He also knows how to utilise objects of the world for the welfare of all. To such a person the wakefulness of the worldly people is like darkness. The worldly people remain engrossed in worldly affairs, in which they can become very clever, but their intellects can perceive nothing beyond this. While the person of wisdom following the spiritual path besides knowing spirituality also knows the world.
A Sloka is a verse of the Bhagavad Gita, part of a great epic poem in Sanskrit, the Mahabharata, an important work in Indian philosophy. The Bhagavad Gita is a handbook full of practical wisdom for a fulfilled life and educates us about the art of living which leads us to LOKAsamgraha: the ultimate welfare of all.