Mathematically, the heart is the intersection of bisectors of three internal angles of a triangle, which is the center of the inscribed circle.

Emotionally, the heart refers to the true perception of the external world that exists in one's mind.

The inherent characteristics of human beings

There is a pulling force in people's hearts that urges them to accomplish something.

Wandering wanderers, because they miss their hometown in their hearts, even if the heavy snow blocks their way home, they resolutely return home on foot; Strong patients, because of their inner attachment to life, struggle with illness day and night, and finally get a new life; A brave traveler, because he has a dream beyond himself in his heart, can overcome all kinds of difficulties and finally complete a trip around the world.

People will feel inner pain.

Many years ago, I was lovelorn for the first time, failed in my first venture, and for the first time ... I deeply realized the feeling of heartache and understood the heartbreak of others, heartbreak, heartbreak and heartbreak. The so-called empathy, really only after experience, is by no means a rational analysis.

The human heart is changeable.

Most of the school compositions in childhood show inner simplicity: Today, the autumn is crisp, there are no clouds in Wan Li, and the breeze blows over your face. On the way to school, I feel relaxed and happy, my heart is flying, my heart is in full bloom, I am relaxed and happy, my heart is surging, and I am fascinated.

Entering a complex society, facing the complicated work and life, the complexity of the relationship presents inner complexity, such as impatience, anxiety, ulterior motives, disheartening, trance, lingering fear and grief greater than death.