Everything You Ever Need To Know About Life...

... you can learn from;

The Karate Kid (1984)

Kreese: We do not train to be merciful here. 

Mercy is for the weak. Here, in the streets, 

in competition: A man confronts you, 

he is the enemy. An enemy deserves no mercy. 

A happy 69 to Martin Kove, 

the unsung villain of the Karate Kid movies.

(William Zabka always hogs the attention.)