As long as you have stayed in a swan's egg, it doesn't matter if you were born in a duck yard.

真相很少是纯粹的，也从不简单。

接种天花变得不再必要。

我从不考虑过去。我总是期待下一个挑战。

Man's search for meaning is the primary motivation in his life.

下一代科学家将解决我们今天甚至无法想象的问题。