Other holidays repose upon the past; Arbor Day proposes for the future.

The fundamental impulse that sets and keeps the capitalist engine in motion comes from the new consumers' goods, the new methods of production or transportation, the new markets, the new forms of industrial organization that capitalist enterprise creates.

拓扑态对局部扰动的鲁棒性是拓扑在保护量子信息方面力量的一个证明。

最好的管理是一门真正的科学，建立在明确的法律、规则和原则之上。

现在是过去和未来之间的一座脆弱的桥梁。

The world is full of people whose notion of a satisfactory future is, in fact, a return to the idealised past.