In plain words
Yad bhāvaṃ tad bhavati. When man's heart is pure, the whole world will indeed be pure. First of all, purity of the citta is most necessary. When this purity of the citta grows in us, purity of Jñāna comes within our reach. Without this very Jñāna we sink in the darkness called Ajñāna and turn more restless still. Ajñāna is the root cause of all these sorrows. What is Ajñāna? The principle we do not know. We must try to know the principle we do not know. That very trying to know is sādhana. Only through sādhana does what we seek to attain come to us. Without sādhana, the attainment itself never comes. By practice, tasks are accomplished on this earth. Even a little ant, when it sets out to walk, travels some hundreds of miles. Without effort, a bird, even with wings, cannot move a single inch forward. For man, effort is very necessary. If he makes the effort, he can achieve any amount. But today men are going to the moon through many efforts and by spending wealth. He travels lakhs of miles through space, but is he going even half an inch into the inner space of the heart? He does not go inward even one half inch. How is he able to travel these lakhs of miles? It is with the help of an outer machine that he goes. But we have no need of this machine. The mantra alone is enough for us. It works over any distance at all. Hiraṇyakaśipu went to the region of the stars by means of machines, while the scientists of today have gone merely as far as the moon and no further. In those days Hiraṇyakaśipu went as far as the region of the stars. What was the use of going so far? Even having gone so far, he could achieve nothing. But the one who grasped that divinity, beyond sight, beyond measure and without end, was Prahlāda. Prahlāda's power was all mantra. Hiraṇyakaśipu's power was all machine. What is made of machines may become a failure some day. But a mantra will never fail. ‘What joins reflection and protection is a mantra,’ it has been said.