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If you forget that humans are animals, you will never understand human nature, nor will you ever understand history. The most important things for animals are survival and reproduction. For humans, that translates to money and sex. Money represents resources for survival, and sex represents opportunities for reproduction. Money and sex are the driving forces of human society. Marriage, morality, and law, among other things, are merely superficial. Their purpose is to help humanity resolve the conflicts between individual and collective distribution of survival and sexual resources. You must understand this problem clearly; the various conflicts and friendships in the world, as well as wars and peace, are ultimately triggered by this. Once you grasp this issue, you can see through appearances to the essence. The biggest difference between animals and humans is that animals are content but lack shame, while humans know shame but are never satisfied and are selfish and greedy. After millions of years of evolution, humans have not escaped this, thus forming the most basic driving force of human society. Behind all phenomena we observe, these two elements almost always play a decisive role. Today, I will share 11 unsettling truths about human nature that will make you break out in a cold sweat; the sooner you understand them, the sooner you will awaken. First, a soft-hearted man will remain poor throughout his life; a soft-hearted woman will loosen her belt. Beautiful women are pleasing to the eye, while ex-wives are soothing to the heart. When you are not strong enough, do not be overly infatuated with very beautiful women. Anyone or anything that can bring you great joy will also bring you great pain. Second, things that can be easily obtained are not valued; what is difficult to attain is cherished more. What cannot be obtained will be remembered deeply; human nature has always been this way. A dog should not be overfed, and a person should not be too good to her. Third, if you absolutely must borrow money, do not expect to get it back. In most cases, it will disappoint you. If someone asks to borrow money from you, either refuse directly or prepare for them not to repay you; treat it as a gift. Fourth, many people will praise you to your face, but disparage you behind your back; they will speak kindly when they need you, and do terrible things when there is a conflict of interest. You must adapt to this hypocrisy; it is human nature. Fifth, you must let reality slap you in the face before you realize how hypocritical people can be. You must let friends betray you before you understand how frightening human nature can be. Those who trust everyone have never been hurt. Saying heat is not scary means you have never been burned; saying cold is not scary means you have never been frozen. Do not believe in so-called principles; believe in the chips you hold in your hand. Sixth, if one day this world requires no payment, then no one will solve any problems—this is the biggest issue. If you ask someone for help, you must pay them. If they say no, they are just being polite; in their hearts, they still want something. You can only keep them from pushing you away by continually providing benefits. There is no such thing as free help in this world. Even if there is, it is only because you have helped them in the past. Seventh, learn to hide two things: one is your thoughts, and the other is your abilities. Keep your thoughts to yourself; once spoken, they become stories in others' mouths. If your heart is vulnerable and gets hurt, it is only a matter of time; abilities should also be hidden to some extent. Abilities are like sharp blades, which can easily injure others. People have extreme psychology; they prefer to accept the success of strangers but find it hard to tolerate the excellence of those around them. If you do not know how to conceal, you will surely invite endless troubles. Eighth, drinking does not bring friends, smoking does not dispel loneliness, confiding does not bring sympathy, and boasting does not bring happiness. Life is like an ant, yet one should have the ambition of a swan; life is fragile, so one should have an indomitable spirit. No matter how beautiful the words of friends are, they cannot compare to a few pieces of silver. In this thin world, if you are not strong, everything is just fleeting. Ninth, if you are diligent, earnest, selfless, and do not expect rewards, if you are obedient in the workplace, never causing trouble for your leaders, and never passing the buck with colleagues. If you are magnanimous in every matter, congratulations; it won't be long before you become the unspoken soft target of your workplace. Tenth, if there are no sheep, what do wolves eat? If there are no poor people, what do rich people eat? The wealth of the rich has never been cars and houses, but rather the poor. This has been an unchanging law from ancient times to the present. Those who labor with their minds govern those who labor with their bodies. This world is neither solely for the wealthy nor for the powerful, but for those who understand human nature. Everything changes, but human nature does not; thus, those who grasp human nature will not be lost, no matter the era or place in which they operate. Successful people are always masters of manipulating human nature. Failures always have an unforgivable misunderstanding of human nature. In fact, at the heart of learning, one will understand that there is nothing new under the sun because human nature never changes. The teachings of learning societies clearly tell you that everyone can predict the future of this world.