The samples taken by OECD are rarely from developing countries, and the sample conclusions cannot represent the situation of all regions, nor can they find out the causal relationship between learning and living. Nevertheless, learning behavior itself contributes to the cultivation of one's moral character since ancient times.
The way ahead is so long without ending, yet high and low I'll search with my will unbending.
Poverty is a virtue, and prosperity is a virtue.
Exterior inside seek, square get always.
For one thousand years the old adage tells us with empty cup state of mind, keep an open mind, don't destroy the hope of exploring whether peak in life or in low trough, white-haired and blood fang, whether in countless or friends optimal class, don't inspire the youth's morale, not trivial, don't give up, life may be continued.
To borrow a famous saying of British writer maugham: "youth is the ability to imagine in the face of reality, instead of deceiving yourself according to others' imagination."
OECD抽取的样本鲜有发展中国家，样本结论既不能代表所有地区的状况，也不能找出学到老活到老的因果联系。尽管如此，学习行为本身有助于修身养性自古有之，
路漫漫其修远兮，吾将上下而求索。
穷则独善其身，达则养你(兼善天下)。
外观内求，方得始终。
千百年来的古训教诲我们怀揣空杯的心态，保持开放的胸怀，不灭探索的希望，不管是在人生巅峰还是在卑微谷底，不管是白发苍苍还是热血方刚，不管是在奋笔疾书还是在友邻优课，不激发青春的斗志，不猥琐，不放弃，可能才是生命持续的动力。
借用英国作家毛姆的一句名言：“青春是面对现实去想象的能力，而不是按着别人的想象来欺骗自己。”
