What is Qian Junfu's eight-word family motto?

Learn knowledge and contribute to society.

Qian Xuesen was born in 19 1 1. His father, Qian Junfu, is a famous educator and expert in literature and history, and devoted a lot of efforts to training Qian Xuesen.

When I was a child, Qian Xuesen looked at his father's diligent back and turned over piles of thread-bound books. Qian Junfu picked him up: "When you grow up, you must study hard to make our country rich and strong." Young Qian Xuesen nodded his head.

At the age of five, Qian Xuesen was particularly interested in the characters in Water Margin. One day, he suddenly asked his father, "One hundred and eight heroes are descendants of one hundred and eight stars in the sky. Are all the great men in the world stars in the sky? "

Father smiled and said, "All heroes and great men are not stars in the sky. They are all ordinary people. It's just that they love learning since childhood, have great ambitions, determination and perseverance, so they have done earth-shattering things. "

Qian Xuesen said seriously, "If heroes are not bought by the stars in the sky, then I can be a hero." Father said happily, "You can be a hero, too. However, we must study hard, learn knowledge well and make contributions to society. "

In the days that followed, Qian Junfu repeatedly told his son the truth of "learning knowledge and contributing to society", and these eight words were deeply imprinted in his young mind.

1August, 935, Qian Xuesen went to study in the United States. When I saw him off, my father bought Lao Zi, Zhuangzi and other Chinese classics, took out a piece of paper from his pocket, wrote "Wait for me to leave", and then turned to leave.

Looking at his father's distant back, Qian Xuesen opened the note in his hand. It says: "People should be born with qualities such as philosophy, benevolence, righteousness, wisdom, loyalty, loyalty and teaching! My son's trip to the western regions is not his ambition, but when he is young, he will return brilliantly! My father told me. "

This sentence is in the same strain as "learning knowledge and contributing to society".

Since then, Qian Xuesen has not only made impressive academic achievements, but also been highly praised for his character. From 65438 to 0955, Qian Xuesen finally returned to the motherland and devoted himself to the research of "two bombs and one satellite", making immortal contributions to China's space industry.

The words "learning knowledge and contributing to society" given by his father accompanied Qian Xuesen's life. Qian Xuesen said affectionately many times: "My first teacher is my father."