In the attosecond world, time is not a river but a series of snapshots waiting to be captured.
The principal effect of the progress of society is to increase the quantity of wealth, and the power of distributing it.
The mind is a system of coordinated activities.
一个好的工程师是能把挫折转化为灵感的人。
We can’t ignore the economic role of coal, but we also can’t ignore its environmental impact.