First, you should not trust anyone, but only those who have been proved credible: the first attitude is stupid, and the second is smart.

from: [Ancient Greece] democritus: The Pieces of Works

Introduction: democritus (Greek: Δ η μ? κριτο? , about 46 ~ 37 BC), was born in the commercial city of Abdallah on the coast of Thrace, a great materialist philosopher in ancient Greece, and one of the founders of the theory of atomic materialism (first put forward atomism (everything is made up of atoms)).

second, don't treat everyone with distrust, but be cautious and firm.

From: [Ancient Greece] democritus: Pieces of Works

Third, relying on mutual trust and help, we can accomplish great undertakings and make great discoveries.

from: Homer: Hiriart

Introduction: Homer (? μηρο? /Homer, about 9 th century-8 th century), a blind poet in ancient Greece. According to legend, the Trojan War from the 12th century BC to the 11th century BC, as well as the epic Iliad and Odyssey, long narrative masterpieces of ancient Greece about maritime adventures, are described.

Fourth, before you trust a person, you should get to know him deeply.

from: [ancient Rome] Cicero:

Introduction: Marcus Tullius Cicero (January 3, 16-December 7, 43), a famous politician, orator, orator, jurist and philosopher in ancient Rome.

5. People always believe what they want easily.

from: [ancient Rome] Caesar: The Battle of Galico

from: gaius iulius caesar, known as Julius Caesar in history, translated by Gaius Julius Caesar, Pope Caius Julius Caesar, etc., an outstanding military commander and politician at the end of Rome * * * and the Republic of China (now the Mediterranean coast and other regions).