Setting goals is the first step in turning the invisible into the visible.
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。
"The novel is a place where you can explore the complexities of human nature without fear of judgment."
To be modern is to be in constant dialogue with tradition.
"We must always strive to do the right thing, even when it is difficult."