The key ingredients of happiness could not be material or aesthetic, but must always stubbornly psychological.
幸福的关键因素并非是物质的或审美的，而永远是心理上的。《旅行的艺术》
Safety isn't a department - it's a culture that starts at the very top.
There is no absolute fairness in life, but it is relatively fair.
科学是一项集体事业，每个世纪都为其添砖加瓦。