“... skepticism can never provide firm ground under a man's feet. And perhaps, after all, we need firm ground.”
“If your feet are firmly planted on the ground you'll never be able to dance.”
“Look Toward the stars but keep your feet firmly on the ground.”
“In a flash of wonderment she saw firm, continuous ground under her feet, stretching from back then to right now and on and on as far as her eyes could take her.”
“Once the world was pulled out from beneath your feet, did you ever get to stand on firm ground again?”
“Show me a woman with both feet planted firmly on the ground - and I'll show you a girl who can't get her knickers off.”