The shape of this nut suggests a human skull and brain. It also symbolizes the effort needed to achieve what you desire. The walnut shell, on the other hand, represents the ego that must be destroyed for the emergence of the spiritual self (the fruit). If the nut is green, it is impossible to open. But if it is ripe, a small tap can open it. Similarly, spirituality emerges when the person is truly ready. According to popular superstition, this dream portends that you will receive money.