贫病诚可羞，故床无新裘。春色烧肌肤，时餐苦咽喉。倦寝意蒙昧，强言声幽柔。承颜自俯仰，有泪不敢流。默默寸心中，朝愁续莫愁。

The present state of the system of nature is evidently a resultant of what it was in the preceding moment, and if we conceive of an intelligence which at a given instant comprehends all the relations of the entities of this universe, it could state the respective positions, motions, and general effects of all these entities at any time in the past or future.