【释义】上天要把重任降临在某人的身上前，必定先磨炼他的心理和意志。

I was looking for the key for years, but the door was always open.

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.

Silence is not always absence; sometimes it is the loudest presence.