The most primitive part of the human mind, the id is the source of our bodily needs, wants, desires, and impulses. Freud believed that the id acts according to the "pleasure principle" – the psychic force that motivates the tendency to seek immediate gratification of any impulse. The id is the only component of personality that is present from birth, and for good reason. Infants depend on others to provide them with food, to change their diaper, and to avoid pain or discomfort. The id is the part of the mind that compels a baby to cry when he or she is in need of something, ensuring a healthy and happy upbringing.
The id, according to Freud, is the most selfish part of our mind. It is only concerned with the immediate satisfaction of whatever want or need the body is experiencing at the moment. Freud stated that the id "knows no judgements of value: no good and evil, no morality" – only the fulfillment of immediate desires. Infants, for example, do not consider the needs of their parents when they cry.

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