“In the Gates of the Mountains there have been many blowups. Now there are many rattlesnakes and nothing more fragile than mountain goats, themselves tougher than the mountains they disdain, although at a distance they are white wings of butterflies floating up and down and sideways across the faces of fragments of arches and cliffs, touching but never becoming attached to them.”

Mount Everest, The Reconnaissance (1921), Chapter XII: The Northern Approach, "The Reconnaissance of the Mountain", p. 186

How I Became A Hindu - My Discovery Of Vedic Dharma

1960s, Keep Moving From This Mountain (1965)

Source: Clockwork Princess

Das war meine Sehnsucht: nach göttlicher Einsamkeit und Ruhe der Berge, nach unberührtem, weißen Schnee. Ich war der großen Stadt müde geworden.
Ich bin wieder zu Hause in den Bergen. Da sitze ich viele Stunden in ihrer weißen Jungfräulichkeit und finde mich selbst wieder.
Michael: a German fate in diary notes (1926)

[38] "Alone Looking at the Mountain"
Variant translations:
The birds have vanished down the sky.
Now the last cloud drains away.
We sit together, the mountain and me,
until only the mountain remains.
"Zazen on Ching-t'ing Mountain", trans. Sam Hamill
Flocks of birds fly high and vanish;
A single cloud, alone, calmly drifts on.
Never tired of looking at each other—
Only the Ching-t'ing Mountain and me.
"Sitting Alone in Ching-t'ing Mountain", trans. Irving Y. Lo

"Keep Moving from this Mountain" http://www5.spelman.edu/about_us/news/pdf/70622_messenger.pdf – Founders Day Address at the Sisters Chapel, Spelman College (11 April 1960)
1960s
Context: I think we have been in the mountain of moral and ethical relativism long enough. To dwell in this mountain has become something of a fad these days, so we have come to believe that morality is a matter of group consensus. We attempt to discover what is right by taking a sort of gallup poll of the majority opinion. Everybody is doing it, so it must be all right, and therefore we are caught in the clutches of conformity... In a sense, we are no longer concerned about the ten commandments-they are not too important. Everybody is busy, as I have said so often, trying to obey the eleventh commandment: “Thou shalt not get caught.” And so, according to this view, it is all right to lie with a bit of finesse. It’s all right to exploit, but be a dignified exploiter. It’s all right to even hate, but dress your hate up into garments of love and make it appear that you are loving when you are actually hating. This type of moral and ethical relativism is sapping the very life’s blood of the moral and spiritual life of our nation and our world. And I am convinced that if we are to be a great nation, and if we are to solve the problems of the world we must come out of this mountain. We have been in it too long. For if man fails to reorientate his life around moral and ethical values he may well destroy himself by the misuse of his own instrument.

Source: De architectura (The Ten Books On Architecture) (~ 15BC), Book I, Chapter VI, Sec. 10

Source: Let My People Go Surfing: The Education of a Reluctant Businessman