In plain words
That is priya. At once he paid the money and took them. Holding them in his hand, he is delighting in them. That is moda. He went home, washed them well and ate them. This is pramoda. ‘Nityānandaṃ parama sukhadaṃ’: so the devotee prays to God with Prema. Or he longs to see a person. The moment he sees him, joy arises. To draw near and be together with each other is moda. To join in him and experience joy is pramoda. Ānanda has three levels. If God, Swami, appears in a dream, joy arises. When the Swami who appeared in the dream comes in person, greater joy still arises. Oneness itself is Brahmānanda. That is yogānanda. That is advaitānanda. That is premānanda. Oneness in Ānanda is Ānanda without measure. To experience this Ānanda, we must set the senses on the path of discipline.
How are we to keep the senses under control? The power of the mind is the support of all the senses. Without the awareness of the mind, the senses cannot work at all. At times a sense goes astray. For example, if we strike a porcelain vessel with a stick, a sound comes. That is, a sound forms. That is, a vibration forms. Through just such a vibration the mind experiences pleasure and pain. Our intellect too is like a porcelain vessel. With abuse, a vibration forms in the mind. At once the joy takes a blow. Agitation arises. We lose control of the mind and come down to blows. Suppose someone speaks in glowing praise. Its effect falls on the mind. We forget ourselves and sink into joy.
But in sorrow, and in joy too, the power of discrimination wanes. For one who has lost the power of discrimination, not knowing good from bad, the mind takes the wrong road. Where is the mind's place? Below the mind is prāṇa; above the mind is Buddhi. Buddhi is of the nature of fire. Prāṇa too is of the nature of fire. What stands between the two is the mind. The presiding deity of the mind is the Moon. The nature of the Moon is water. Fire above, fire below. Here, prāṇa. There, Buddhi. Standing between the two, it is thrown into confusion. The waves grow too many. It turns to water. To flow downhill is the nature of water. Pour water on a hill and it still runs down. Put fire in a pit and the flame still goes up. Fire goes to the higher level. Water goes downward. If the nature of water is to go to the lower state, the nature of fire is to go to the higher state. Join the mind to Buddhi and it sinks into lofty inquiry. So whatever work you do, even if it takes a little more time, inquire well and only then enter into the work. Without inquiry, the mind falls into many troubles.
The mind flows as the current within every sense. Suppose you are asleep and dreaming.