"Sometimes the roots of a tree may be firmer than the foundations of a house. When the floor starts shaking, wouldn’t it be safer to catch hold of the branch of a tree? The times are so difficult that you may find a branch more secure than the slabs that make up the floor. Even a small window may prove more useful than a door. In the midst of earth tremors, the supple, living branch will not break; that is why you should focus on studying the nature of things. It is silly not to make use of what is growing right by the window. Only a madman needlessly uproots a plant that he himself is unable to cultivate. Likewise, it is only creatures of falsehood that try to encircle the path and force the traveler to deviate. But on the branches of life one can leave the signs of the true path. So let us protect every branch that grows by the window. When necessary, let the leaves of the garden preserve our work and protect us from the whirlwind—this means that the whirlwind is raging. I am explaining that you should not fear the whirlwind, for it is bringing flowers from every corner of the world. The roots that make up remedies often come from widely scattered places. 231."
January 1, 1970
https://en.wikiquote.org/wiki/Environmentalism