How to make civilized slogans?

Have pity on the flowers at hand and the grass at your feet. (lawn)

Don't say my tears You don't care. (lawn)

The grass smiles slightly, please go around. (lawn)

A step of compassion is expensive. (lawn)

Don't let a strong life be the ghost of the first step. (lawn)

I don't want to do it myself, but I want to facilitate the green campus.

The green grass smiles slightly. Please walk around. (meadow)