"Had I the heavens' embroidered cloths,
Enwrought with golden and silver light,
The blue and the dim and the dark cloths
Of night and light and the half light,
I would spread the cloths under your feet:
But I, being poor, have only my dreams;
I have spread my dreams under your feet;
Tread softly because you tread on my dreams."
— William Butler Yeats (The Wind Among the Reeds 1899)

"Keep your eyes on the stars, and your feet on the ground."
— Theodore Roosevelt