In plain words
If the feeling held in the mind is good, success in the work is sure to come; if the feeling held in the mind is foul, the fruit too turns foul in the same way.
Students!
Bhāratīya culture is beyond compare. It is the very highest. Man means the mind. The mind means a gathering of thoughts. Conduct is the working of thoughts. Joy and sorrow are the fruit of conduct. The root cause of the joys and sorrows man suffers today is his own conduct. The root cause of this conduct is thoughts alone. The gathering of these thoughts is the mind. Because he has come from manasu, the mind, he is named manishi, man. Without the mind he is not man. Only one who has a mind is man. Beasts, birds, animals and the like have no mind.
Speech comes forth through this mind. This mind has come forth from the principle of aham itself. Aham is the reflection of the Ātma. Speech, mind, aham and Ātma: these four belong to one family. Of these, it is when speech, mind and aham, the three, come together that humanness takes shape as divinity. Humanness attains divinity only when these three are joined in a bond of mutual affection. When something comes about that breaks the oneness of these three, it falls into unrest of many kinds. Three brothers live in a house. When these three follow one another, love one another and live together in harmony with one another, then peace settles in the house. But when for some reason differences of opinion arise in the mind, when they hate one another and behave apart, that unrest creeps through the whole house. Unity is the root cause of Ānanda and of Śānti. It is when unity does not come together that a kind of cause arises for discontent and for unrest.