注意力是心灵以清晰生动的形式，从几个同时可能出现的对象或思绪中占据一个。
Attention is the taking possession by the mind, in clear and vivid form, of one out of what seem several simultaneously possible objects or trains of thought.
最高的知识是知道我们被神秘所包围。
过去是幽灵，未来是梦想，我们拥有的只有现在。