The hardest thing to learn in life is which bridge to cross and which to burn.
The truth about a person is often hidden in the gaps between what they say and what they do.
The most important thing in singing is sincerity, technique is just auxiliary.
I don't have any particular recipe [for developing new proofs] ... It is the reason why doing research is challenging as well as attractive. It's like being lost in a jungle and trying to use all the knowledge that you can gather to come up with some new tricks, and with some luck you might find a way out.
统计方法的目的是为从数据中得出结论提供合理的基础。