Keeps mankind sweet by action; without that
The world would be a filthy settled mud. [ Crown ]

And by his side rode loathsome gluttony.
Deformed creature, on a filthy swine;
His belly was up-blown with luxury,
And eke with fatness swollen were his eyne. [ Spenser ]

One's filthy linen should be washed at home. [ French Proverb ]

The best of men have ever loved repose;
They hate to mingle in the filthy fray;
Where the soul sours, and gradual rancour grows,
Imbitter'd more from peevish day to day. [ Thomson ]

The sound of fresh rain run-off splashing from the roof reminded me of the sound of urine splashing into a filthy Texaco latrine. [ Jack Handey, Deep Thoughts ]

I was walking in the street, a beggar stopped me, — a frail old man. His inflamed, tearful eyes, blue lips, rough rags, disgusting sores . . . oh, how horribly poverty had disfigured the unhappy creature! He stretched out to me his red, swollen, filthy hand. He groaned and whimpered for alms. I felt in all my pockets. No purse, watch, or handkerchief did I find. I had left them all at home. The beggar waited and his out-stretched hand twitched and trembled slightly. Embarrassed and confused, I seized his dirty hand and pressed it. Don't be vexed with me, brother; I have nothing with me, brother. The beggar raised his bloodshot eyes to mine; his blue lips smiled, and he returned the pressure of my chilled fingers. Never mind, brother, stammered he; thank you for this — this, too, was a gift, brother. I felt that I, too, had received a gift from my brother. [ Ivan Tourgueneff ]