From his poem Do not go gentle into that good night.

Do not go gentle into that good night,
Old age should burn and rave at close of day;
Rage, rage against the dying of the light.

When young we never think of the “night” coming. When old we think of when we were young as we know the “night” is coming. Live LIFE to it’s fullest every day, for sure as day dawns, the night will come.

A great site for poems is: poets.org