Youth is full of sport, age's breath is short; youth is nimble, age is lame; Youth is hot and bold, age is weak and cold; Youth is wild, and age is tame.
— William Shakespeare

Nimble thought can jump both sea and land.
William Shakespeare nimbleness quote

But we are so fond of life that we have no leisure to entertain the terror of death. It is a honeymoon with us all through, and none of the longest. Small blame to us if we give our whole hearts to this glowing bride of ours, to the appetities, to honour, to the hungry curiosity of the mind, to the pleasure of the eyes in nature, and the pride of our own nimble bodies.
— Robert Louis Stevenson

...The city fireman-the fire that suddenly bursts forth in the close-pack'd square, The arriving engines, the hoarse shouts, the nimble stepping and daring,The strong command through the fire-trumpets, the falling in line,the rise and fall of the arms forcing the water,The slender, spasmic, blue-white jets-the bringing to bear of the hooks and ladders, and their execution,The crash and cut away of connecting wood-work, or through floors, if the fire smoulders under them,The crowd with their lit faces, watching-the glare and dense shadows;....
— Walt Whitman

Haste and rashness are storms and tempests, breaking and wrecking business; but nimbleness is a full, fair wind, blowing it with speed to the heaven.
— nimbleness quotation by Thomas Fuller