If you fulfill your obligations everyday you don't need to worry about the future.
拓扑绝缘体的美在于它们的鲁棒性;它们的表面态受到对称性和拓扑的保护,使它们对某些类型的无序免疫。
"The value of a thought lies in its functional efficacy."
Don’t tell people how to do things, tell them what to do and let them surprise you with their results.