交换、交易和互换的倾向普遍存在于所有人之中，而在其他动物种族中找不到。
The propensity to truck， barter， and exchange one thing for another is common to all men， and to be found in no other race of animals.
"Dreams don't work unless you do."
"The pursuit of knowledge is a journey that never ends, filled with challenges and triumphs."
The internet could be a very positive step towards education, organisation and participation in a meaningful society.