Pennies don’t fall from heaven, they have to be earned here on Earth.
钱不会从天上掉下来,必须脚踏实地去挣。
"The power of a story is in its ability to inspire hope."
"The past is never dead. It's not even past."
The holographic principle suggests that the information content of a region of space can be thought of as encoded on the boundary of that region, much like a hologram.
奈奎斯特准则提供了一种图形方法来确定闭环系统的稳定性。