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志士惜年,贤人惜日,圣人惜时。
有志之士珍惜每一年的光阴;贤德之人,珍惜每一天的光阴;而圣人则会珍惜每一寸的光阴。
No wise pilot, no matter how great his talent and experience, fails to use a checklist.
Sustainability is not just a goal, it's a responsibility.
The poor are not irrational; they are just as rational as anyone else, but they operate under very different constraints.