Writing is a way of preserving memory.
The saddest thing about love is that not only that it cannot last forever, but that heartbreak is soon forgotten.
I think the best acting is instinctive. It's not intellectual, it's not mechanical, it's instinctive.
当且仅当所有投资者都持有均值-方差有效的投资组合时,市场组合才是有效的。
Innovation is the soul of enterprise development; without innovation, there is no future.