Sensory Experience
Sensory experience is symbolized by gained knowledge after birth. According to Empiricists, a human being has no inbuilt mind notion but only learns through experience and the environment. Therefore, when a child is born, his brain is empty, and then he starts learning until he becomes mature to make individual decisions. Consequently, sensory experience is symbolized acquired knowledge over time.
The symbolism of the mind as a machine
The author uses four different boxes analogy to symbolize the function of the mind as a machine. When information reaches the mind, it is sent into the particular box section, where it is processed and relayed to other parts of the body to enable an appropriate response. Therefore, babies have inbuilt individuality and the ability to process information, and the situation improves as they grow.
Moral philosophy
Moral philosophy is symbolized by mental acumen and free will. The author explains that human beings have the freedom of choice, and they can do whatever they think is right. However, morality requires an individual to use his free will and mental acumen to make the right decisions and choices that comply with societal expectations.