Light and darkness two completely opposite things but still so similar.
Like two faces of a coin.
Laughs and sobs two different emotions but still so close to a person's heart living side by side.
There can't be darkness without a little light and there can't be light without a bit of darkness. There can't be happiness without a moment of sadness and there can't be sadness without a peak of happiness.
Because nothing is perfect; nothing is flawless. Even a rose has its thistle. Everything changes the Sun comes down at a time. Summer changes to winter.
Even the devil was once an angel.
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This is the shortest one the others are long i promise