praise childhood, which brought the beauty of heaven in our earthly hardships. -Amir
Childhood used to be the most wonderful stage of life. At that time, the child was a flower and a fruit, an ignorant intelligence, an endless activity and a strong desire. -Balzac
If there is no direct and vivid connection between children and nature (it can make children first interested in the great mystery of cosmic life), then the most vivid and gorgeous picture can't move him. -Schederin, Russia
Don't be idle, turning a young man's head white and feeling sad-Yue Fei
Cleverness comes from diligence, and genius lies in accumulation-Hua Luogeng
A good scholar who is eager to learn but not diligent in asking questions.