Not Shakespeare

I found this one:

Time is very slow for those who wait
Very fast for those who are scared
Very long for those who lament
Very short for those who celebrate
But for those who love,
Time is eternal

 where else but Pinterest. (That site is a veritable goldmine of misattributed quotes. I swear, it'll keep me in business for years.) It was attributed to William Shakespeare (of course), naturally without a play or poem. When I searched "time love eternal" on Shakespeare Searched, a few of his sonnets came up, none containing the quote in question. When I Googled it, some of the first sites to come up connected the quote to Henry van Dyke, a twentieth century American author. This quote was in the poem "Katrina's Sun-Dial" in his book Music and Other Poems. The quote technically isn't even correct, the last line of the poem is "Time is not" as opposed to "time is eternal".

The full text of the book this poem appears in can be found here on Project Gutenberg. (There's a hyperlinked table of contents, you can go directly to the poem here.)