SB 5.4.15
yad yac chirsanyacaritam tat tad anuvartate lokah.
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Whatever action is performed by a great man, common men follow.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
A similar verse is also found in Bhagavad-gita (3.21). It is essential for human society to have a section of men perfectly trained as qualified brahmanas according to the instructions of Vedic knowledge. Those below the brahminical qualification — administrators, merchants and workers — should take instructions from those ideal people who are considered to be intellectuals. In this way, everyone can be elevated to the highest transcendental position and be freed from material attachment. The material world is described by Lord Krsna Himself as duhkhalayam asasvatam, a temporary place of misery. No one can stay here, even if he makes a compromise with misery. One has to give up this body and accept another, which may not even be a human body. As soon as one gets a material body, he becomes deha-bhrt, or dehi. In other words, he is subjected to all the material conditions. The leaders of society must be so ideal that by following them one can be relieved from the clutches of material existence.