The smallest effort is not lost,
Each wavelet on the ocean tost
Aids in the ebb-tide or the flow;
Each rain-drop makes some floweret blow;
Each struggle lessens human woe.

Charles Mackay (1814-1889) Scottish poet, journalist, song writer

Poem (1856?), “The Old and the New,” st. 45, Ballads and Lyrical Poems
    (Source)