Our life is an apprenticeship to the truth that around every circle another can be drawn; that there is no end in nature, but every end is a beginning; that there is always another dawn risen on mid-noon, and under every deep a lower deep opens.
我们的一生,都在学习这个真理:每一个圆之外,还可以再画一个圆;自然没有终点,每个终点都是开端;正午仍会升起另一道曙光,每一重深处之下,还会展开更深的天地。
— Ralph Waldo Emerson · Circles · Essays: First Series (1841) —