Psychology must be based on facts, not hypotheses.
技术是工具,用户才是核心。
Concerning the gods, I have no means of knowing whether they exist or not or of what sort they may be. Many things prevent knowledge including the obscurity of the subject and the brevity of human life.
可持续性不是一种选择;它是能源未来的必要条件。
夏天的飞鸟,飞到我窗前唱歌,又飞去了。秋天的黄叶,他们没有什麽可唱的,只是叹息一声,飞落在那里。