In plain words
All this is because of machines. But though they invent these machines, there must be some machine that invented all the machines. We must come to know it. There is one machine greater than all. There is a machine that invented everything. There is a machine that repairs. There is one machine more wonderful than all. That is none other than our body. The body itself invented that radio. Our body itself invented this TV. It invented these bombs; yet we do not understand the body that invented all these machines. So recognise the machine of your body well. Understand what is inside this machine. First of all, research it well. Everything is in your body itself. This itself is the great machine.
Wondrous, and to the three worlds sanctifying; sickles for the creepers of worldly life; true friends; to the grove of the sages the springtime: such are the stories of Lord Viṣṇu.
They are right within. Unable to know this machine, people come to know all sorts of machines. There is no use in knowing those machines. Know well this machine that is the body. Follow well the radio that comes from this very body. That itself is your conscience. Follow well what comes from that conscience. This conscience is right within us. This TV is right within us. Everything is right within us. First of all, look at what is within you. In Vedānta, this is the very thing he asked: that one know oneself. If you know yourself, you will be one who knows everything. If you do not know yourself, there is no use in knowing the whole world.
The Body Itself Is the Great Machine
Students! Teachers!
Every single thing is in our body itself. There is no machine anywhere greater than this body.