Regarding the influence of people's inner activities on external behavior, many people, including many experts and scholars, have discussed it more than once. Although, to date, there are still many issues in this area with great ambiguity and uncertainty, it is certain that if a person is weak in his heart and cannot effectively control it, it is difficult to expect him to be able to effectively guard against external changes and intrusions, which will inevitably cause some serious consequences. Such as:

The war between Sweden and Poland in 1654 was frustrated by the fact that the Swedish king had one less additional title than the Polish king in an official document, and the Swedish king could not bear it and provoked the incident, with heavy losses on both sides.

Someone accidentally splashed water from a glass on the head of the Marquis de Tole, which led to a great battle between England and France.

A young boy throws pebbles at Duke Gruiz, leading to the Vasi massacre and the 30-year war.

These are all small things that cannot be smaller, but why do they cause people's mentality and emotions to deviate from their original main goals and important matters, and turn them in the obviously wrong direction? This obviously has a lot to do with the inner problems of the person concerned.

While it is unlikely that a small thing will start a war, we may be able to get angry, suspicious, jealous, and all sorts of other blows and injuries because of the imperfection of our inner "fortifications", which can easily enter and cause destruction, or even bring us a devastating blow at all.

On the slopes of the Grand Canyon in Colorado, USA, lies the remains of a large tree. Naturalists tell us that it was more than 400 years old. At the time of the first germination, Columbus had just landed in the Americas; When the first immigrants came to the United States, it was only half the size. In its long life, it has been struck by lightning more than a dozen times; For four hundred years, countless storms have struck it, and it has been able to overcome them. But in the end, a small group of unknown bugs attacked the tree, causing it to fall to the ground. Because those insects bite from the roots to the inside, and gradually hurt the vitality of the tree. Although it is small, its constant attacks have caused devastating damage to the interior of the tree. Such a giant of the forest, which the years had not withered, which had not been struck down by lightning, and who had not been hurt by the storm, had finally fallen because of a small group of beetles that could be pinched to death with the thumb and forefinger.

Aren't we like the battle-hardened trees in the forest? Although we have experienced countless storms and lightning blows in our lives, we have survived, but once our hearts are bitten by small insects, it is often difficult to resist. Obviously, this has something to do with the fact that we don't have a "shield" in our hearts, or that the "shield" has a poor defensive function for various reasons. We must pay attention to this.