Imam Jafar al Sadiq (as) sade:
Världen kan liknas vid havets vatten; ju mera en törstig person dricker av det, desto törstigare blir han, tills det dödar honom.
The example of the world is that of sea water; the more a thirsty person drinks from it, the thirstier he becomes until it kills him.
[al-Kafi, vol. iii, p. 205]