The most advanced technology is worthless if it doesn't serve the farmer's needs.
The only way to tell the truth is to speak with authority, and the only way to speak with authority is to claim the right to tell the truth.
孩子天生就能改进他们的行为,而且他们也喜欢这样。心理学家说,孩子必须游戏、因为借着游戏,孩子的发展才能更趋完善。