Human cognition is best understood as a hierarchy of information processing levels.
人类认知最好被理解为信息处理层次的层级结构。
The pursuit of knowledge is the most noble of human endeavors.
译文:纵览历史,凡是贤明的国和家,成功源于勤俭,衰败起于奢华。赏析:节俭不是吝啬,是对钱财的合理利用。不管何时,我们都要有忧患意识,保持俭朴的作风。