Nature is relentless and unchangeable, and it is indifferent as to whether its hidden reasons and actions are understandable to man or not.
自然界是无情且不可改变的，它不在乎其隐藏的原因和行为是否能为人类所理解。
巴菲特反对股票分割配股，他甚至半开玩笑地在朋友的生日贺卡上写到
"The only limit to our realization of tomorrow is our doubts of today."
The ethical implications of genetic modification must be carefully considered.
The streets were dark with something more than night.