This book is a seventy-three songs full of the wisdom of Sanatana Dharma and the enlightened vision of one of the most evolved siddha yogis of modern times. The profound tradition of Saivism migrated to Sri Lanka centuries ago. It was transmitted in recent times through a lineage of siddhars of the highest order. The late 19th and early 20th century master, Siva Yogaswami of Colombuthurai, left a rich heritage of songs known as Natchintanai ("Good Thoughts") that contain the essence of Siva worship and Saiva philosophy. This selection of 73 of those songs is meant to serve as an introduction and learning tool for those who would integrate this veritable fountain of divine wisdom into their hearts and lives.