Tirukkural 816: Evil Friendship

The hatred of the wise is ten-million times more profitable than the excessive intimacy of the fool.

Image of Satguru Sivaya Subramuniyaswami
Sadhana is performing the same discipline over and over and over again. Just as we methodically exercise the physical body to build up its muscles, we perform spiritual disciplines over and over again to strengthen our spiritual, inner bodies.