“We humans look rather different from a tree. Without a doubt we perceive the world differently than a tree does. But down deep, at the molecular heart of life, the trees and we are essentially identical.”
Source: Cosmos
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Carl Sagan 365
American astrophysicist, cosmologist, author and science ed… 1934–1996Related quotes

83, a slight variant of this was later published in Parables and Paradoxes (1946):
We are sinful not merely because we have eaten of the Tree of Knowledge, but also because we have not yet eaten of the Tree of Life. The state in which we find ourselves is sinful, quite independent of guilt.
Also quoted in this form in The Parables of Peanuts (1968) by Robert L. Short, and Like a Dream, Like a Fantasy: The Zen Teachings and Translations of Nyogen (2005)
The Zürau Aphorisms (1917 - 1918)
Context: We are sinful not only because we have eaten of the Tree of Knowledge, but also because we have not yet eaten of the Tree of Life. The state in which we are is sinful, irrespective of guilt.
section 20
quote is from Prayer for the Departed by Armand Godoy
The Myth of Modernity (1946)

“and even the trees we walked
under
seemed
less than
trees
and more like everything
else.”
Source: You Get So Alone at Times That it Just Makes Sense

Quoted in BBC News, "India President Pratibha Patil cautions on reform" http://www.bbc.com/news/world-asia-india-16724191, January 25, 2012.
"Cryonic Freeze" Cutthroat, A Journal of the Arts, Vol. 14, No. 1 (Winter 2013) "Felix, Living History Enactor, Despairs."
2010-

“If we spoke a different language, we would perceive a somewhat different world.”
This actually first appears in Recent Experiments in Psychology (1950) by Leland Whitney Crafts, Théodore Christian Schneirla, and Elsa Elizabeth Robinson, where it is expressed:
: If we used a different vocabulary or if we spoke a different language, we would perceive a somewhat different world.
Randy Allen Harris, in Rhetoric and Incommensurability (2005), p. 35, and an endnote on p. 138 indicates the misattribution seems to have originated in a misreading of quotes in Patterns Of Discovery: An Inquiry Into The Conceptual Foundations of Science (1958) by Norwood Russell Hanson, where an actual quotation of WIttgenstein on p. 184 is followed by one from the book on psychology.
Misattributed

Isha Insights Magazine, Spring Edition 2009
Sourced from newspapers and magazines
Context: Trees and humans are in an intimate relationship. What they exhale, we inhale, what we exhale they inhale. This is a constant relationship that nobody can afford to break or live without. -Sadhguru (on Project GreenHands mass tree planting initiative)