Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.
Where returns are concerned, time is your friend. But where costs are concerned, time is your enemy.
在回报方面，时间是你的朋友。但在成本方面，时间是你的敌人。
人的自由，以及按照自己的意愿行动的自由，是基于他拥有理性，这种理性能够教导他他应该遵循的法律，并使他知道他自己的意愿自由有多远。