如果沒有悲傷加以平衡，「快樂」這個字就失去意義。 The word ‘happiness’ would lose its meaning if it were not balanced by sadness.

如果沒有悲傷加以平衡，「快樂」這個字就失去意義。 The word ‘happiness’ would lose its meaning if it were not balanced by sadness.
瑞士心理學家 榮格 Carl Jung