Your mind is a treasure house that you should stock well and it's the one part of you the world can't interfere with.
He says, you have to study and learn so that you can make up your own mind about history and everything else but you can’t make up an empty mind. Stock your mind, stock your mind. You might be poor, your shoes might be broken, but your mind is a palace.
Stock your mind. It is your house of treasure and no one in the world can interfere with it.