The current that with gentle murmur glides
Thou knowest, being stopped, impatiently doth rage;
But when his fair course is not hindered
He makes sweet music with th’ enamelled stones,
Giving a gentle kiss at every sedge
He overtaketh in his pilgrimage.
– William Shakespeare, Two Gentlemen of Verona
(The picture of Aluva river kerala,India,Took the photo from a moving train)