"A fickle heart is the only constant in this world", what does this mean?

Question

I heard it in a movie...

Answer 1

The only thing you can be sure of is that people will have

fickle hearts. Fickle means changeable. People's loves

are always changeable and that is the only thing you can

be sure of in life.

Answer 2

there are a LOT of changes in life. and the way your heart beats will follow (ok not literally, but i mean the way you feel about things will change). no one's heart can forever be stable. it's not natural in being a human. so since everyone's heart, or the way they feel about some things at least, will change, it is a "constant" in this world.

Answer 3

Exactly. The only constant in this world is the fact that everyone has a changing heart.