Who said "We must be ready when the darkness comes."?

This quote is attributed to Aragorn.

We must be ready when the darkness comes. - Aragorn

"We must be ready when the darkness comes."

Aragorn

"All we have to decide is what to do with the time that is given us."

"There is some good in this world, and it's worth fighting for."

"A day may come when the courage of men fails, but it is not this day."

"Even the smallest person can change the course of the future."