Life

"Life is not the opposite of death. Death is the opposite of birth. Life is eternal."
( Anathema - Presence )

Perception

If you want to change the world, you have to act. If you want to change the perception you have about the world, you have to think. 

( Coursera On Strategy : What Managers Can Learn from Philosophy - PART 1 )

Kafka

"In a fight between you and the world, bet on the world." --Franz Kafka