The roots of education are bitter, but the fruit is sweet.

Patience is bitter, but its fruit is sweet.

Take the bitter with the sweet

There is no fruit which is not bitter before it is ripe

Now, I see! He really kept his promise. He continued to love me, until my heart stopped beating. But, actually, it was his heart that stopped beating, stopped beating for me.

My your heart never be bitter as dandelion greens but let it be sweet as honey and flow from your actions