In plain words
That is The proper study of mankind is man. Thoughts, words, action: the three must become one. This is very rare today.
Humanness came forth to make known Īśvara's principle of Prakṛti
We cannot recognise such great sacredness as there is in humanness. In truth, man himself is God. Nara himself is Nārāyaṇa. As long as he thinks of himself as an individual, he is nara. When he thinks of divinity, he is Nārāyaṇa. The difference between these two lies only in our own feeling. All of this is the measure of our own feelings! In this world, good and bad are not in the other person. All of it is in ourselves. One's own feelings take shape for one as that kind of good and bad. When every human being regards himself as God and regards himself as a divine power, the whole world will prosper. Humanness came forth to make known Īśvara's principle of Prakṛti. It is to experience this nature of Prakṛti that we have received this body. The body is a tool. The mind is a tool. You yourself are the embodiment of the Ātma. Holding the tool in your hand, you must go on carrying out our karmas and duties. ‘Duty is called yoga.’ In doing our duty we are becoming very poor. We are becoming weak. We must put this weakness far from us. We must fear nothing. We must follow Satya. If you ask who God is in the world, Satya itself is God. Only when we follow such Satya do we become those who have worshipped God. Satya is in every individual. That is why everything in humanness moves only by the power of God. Whatever work is done in the world, God's will is its root cause.
Why does the sun in the sky, never missing his order, every day meet with rising and setting? Why do the stars that adorn the sky with light hide away only by day? Why does the wind, without a moment's rest, himself keep fanning to sustain all living beings? Why do the rivers, ceaselessly, with murmuring sounds, flow on as water? Wherever you look in Prakṛti, among the people, why the differences of wealth, splendour, intellect and caste? Bound by whose command, who is the Lord, by whose order does all this happen so? ‘He is this one, this one is He’: see Him as the Lord of all, my friends.