In plain words
Through that, it renders Buddhi powerless. So cleverness is not the mark of the great among the learned. But unfortunately, in this present age, people think the man with the power of intellect is a great man. They honour him as one with great power of intellect. But in ancient times no one would take in those who had the power of intellect. They honoured only those who had Buddhi.
The very first is śraddhā. What is called śraddhā has two meanings. Interest and steadiness. Śraddhā is precisely these two joined together. Merely to have interest is not enough. There must be right faith upon your interest. Buddhi is that which has both interest and steadiness. Ṛta is nothing but the influence of Buddhi. What is its influence? To enquire into it through the three times and decide whether it is right faith or not: Ṛta is the very name of purity of thought, word and deed. When these three, thought, word and deed, are pure, the name Ṛta becomes true of it. Satya is just this: to grasp the principle of Ṛta well and make it known in the form of speech. Only the word spoken in full faith in purity of thought, word and deed is called Satya. To tell what one saw as one saw it, what one heard as one heard it, and what one did as one did it, is not Satya. This can be called fact. But there is a great difference between Satya and fact. Satya is precisely bringing out the principle of Ṛta in the form of speech.
The fourth is yoga. What does yoga mean? There are many kinds of yoga in the world. But going by Patañjali's Yoga Sūtras, 'yogaḥ cittavṛtti nirodhakaḥ', that is, yoga is nothing but bringing all the senses under control. Yoga is keeping all the powers of man in one's charge. Yoga is keeping the sight under control. Yoga is keeping hearing under control. Yoga is keeping desires under control. Yoga is keeping speech under control; yoga is keeping thoughts under control. To keep the nature of the five senses under control is yoga, it has been said. Even so, we must speak. We must not babble. We must speak through Satya, which is purity of thought, word and deed. We must not argue back and forth over what is untrue. To argue over what one does not know is mere Ajñāna.