“Spring work is going on with joyful enthusiasm.”

“The clearest way into the Universe is through a forest wilderness.”

“The mountains are calling and I must go.”

“Climb the mountains and get their good tidings. Nature's peace will flow into you as sunshine flows into trees. The winds will blow their own freshness into you, and the storms their energy, while ...”

“The world's big and I want to have a good look at it before it gets dark.”

“I only went out for a walk and finally concluded to stay out till sundown, for going out, I found, was really going in.”

“The kingdoms of kings are confined, either by mountains or rivers, or by a change in customs or by a difference of language; but my kingdom is as great as the world, because I am neither Italian, n...”

“Still, for long the love of science triumphed over all other feelings. He became an artist deeply impressed by the marvels of art, a philosopher to whom no one of the higher sciences was unknown, a...”

“John Muir, Earth planet, Un”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettie...”

“To know the history of science is to recognize the mortality of any claim to universal truth. ”

“The scientist only imposes two things, namely truth and sincerity, imposes them upon himself and upon other scientists.”