But whenever I say that I will do this or that, it looks very different when the time comes.

It's wisdom to recognize necessity, when all other courses have been weighed, though as folly it may appear to those who cling to false hope.

I sit beside the fire and think
Of all that I have seen
Of meadow flowers and butterflies
In summers that have been

Of yellow leaves and gossamer
In autumns that there were
With morning mist and silver sun
And wind upon my hair

I sit beside the fire and think
Of how the world will be
When winter comes without a spring
That I shall ever see

For still there are so many things
That I have never seen
In every wood in every spring
There is a different green

I sit beside the fire and think
Of people long ago
And people that will see a world
That I shall never know

But all the while I sit and think
Of times there were before
I listen for returning feet
And voices at the door

It's like things are in the world. Hopes fail. An end comes. We have only a little time to wait now.

This thing all things devours:
Birds, beasts, trees, flowers;
Gnaws iron, bites steel;
Grinds hard stones to meal;
Slays king, ruins town,
And beats high mountain down.

I wish it need not have happened in my time," said Frodo.
"So do I," said Gandalf, "and so do all who live to see such times. But that is not for them to decide. All we have to decide is what to do with the time that is given us.