Time passes

"Eheu fugaces, Postume, Postume, labuntur anni nec pietas moram rugis et instanti senectae adferet indomitaeque morti."

"Alas, O Postumus, Postumus, the years glide swiftly by, nor will righteousness give pause to wrinkles, to advancing age, or Death invincible."

Horace, the poet of middle age, who died aged 57.

"There is no funeral so sad to follow as the funeral of our own youth which we have been pampering with fond desires, ambitious hopes, and all the bright berries that hang in poisonous clusters over the path of life." 

Walter Savage Landor. He threw his cook out of a first floor window and then said "Damn, I forgot the violets".

"There are not many Doctor Johnsons, to set forth upon their first romantic voyage at sixty-four." 

Robert Louis Stevenson, Virginibus Puerisque

O that I were an orange-tree. 

That busy plant! 

Then should I ever laden be. 

And never want 

Some fruit for Him that dresseth me. 

But we are still too young or old; 

The man is gone. 

Before we do our wares unfold: 

So we freeze on. 

Until the grave increase our cold. 

George Herbert. I read that George Herbert Walker Bush was named after him and George Herbert are names often used in his family - however it seems the poet was not an ancestor of his and his baleful son.