“The same river can never be crossed twice. The flowing water has no memory of footprints.”
“You cannot step twice into the same river, for other waters are continually flowing on.”
“We can none of us step into the same river twice, but the river flows on and the other river we step into is cool and refreshing, too”
“No one has ever stepped twice into the same river. But did anyone ever step twice into the same book?”
“You never step in the same river of thought twice, because neither you nor it are the same.”
“There are books so alive that you're always afraid that while you weren't reading, the book has gone and changed, has shifted like a river; while you went on living, it went on living too, and like a river moved on and moved away. No one has stepped twice into the same river. But did anyone ever step twice into the same book?”