“When the juices of trees have no means of escape, they clot and rot in them, making the trees hollow and good for nothing.”

Source: Survivor

Source: The Freedom of a Christian (1520), p. 76

Source: Speak

Lini
(15 October 1993)

Sejamos simples e calmos,
Como os regatos e as árvores,
E Deus amar-nos-á fazendo de nós
Belos como as árvores e os regatos,
E dar-nos-á verdor na sua primavera,
E um rio aonde ir ter quando acabemos...
E não nos dará mais nada, porque dar-nos mais seria tirar-nos mais.
Alberto Caeiro (heteronym), O Guardador de Rebanhos ("The Keeper of Sheep"), VI — in A Little Larger Than the Entire Universe, trans. Richard Zenith (Penguin, 2006)

he said. “Must they punish the grass for their own faults? Men are savages, who would set a land afire because they have a quarrel with other men.”
Source: Earthsea Books, The Farthest Shore (1972), Chapter 9, "Orm Embar" (Arren)

Source: The Freedom of a Christian (1520), pp. 74-75

Variant: I speak for the trees!
Source: The Lorax