Text reads:
"When we try to pick out anything by itself, we find it hitched to everything else in the Universe."
- John Muir,
My First Summer
in the Sierra,
1911
John Muir National Historic Site
Martinez, California
There is also a similar refrigerator magnet with this same "hitched to everything" quote and the 1998 postage stamp.
This and similar bookmarks and refrigerator magnets are available from John Muir National Historic Site bookstore.
Muir was previously honored with a 5 cent postage stamp in 1964.