Bubbles

"Life is basically a soap bubble. 

It rides on the wind, flying here and there, 

and before you realize it ....'pop'! its gone. 

When it's about to disappear, 

you think you could have flown bit higher,

 but by that time it's already too late." 

Sakata Gintoki (Gintama, Japanese Anime-source-Gintama quotes)

"Double, double toil and trouble;

 fire burn and cauldron bubble." 

Shakespeare (Macbeth, Act 4 )