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What is the next sentence of "plain is true"?

Thinking of writing: Sentences should reflect the true meaning of some things in life and express meaningful meanings.

Text:

1, insipid is true, and health is bliss.

2, plain is true, beautiful is love.

3, plain is true, and getting together is always fate.

4, plain is true, and peace and well-being is bliss.

5, plain and faint is true, accompanied by old age.

6, plain is true, and growing old together is love.