“I am myself and I am here.”

Source: Code Name Verity

Testimony to the Dawes Commission (22 August 1883)

Breakfast of Champions (1973)
Context: It was Trout’s fantasy that somebody would be outraged by the footprints. This would give him the opportunity to reply grandly, "What is it that offends you so? I am simply using man’s first printing press. You are reading a bold and universal headline which says,'I am here, I am here, I am here.'"

Source: Magical Thinking: True Stories

Autobiography of Values (1978)
Context: I grow aware of various forms of man and of myself. I am form and I am formless, I am life and I am matter, mortal and immortal. I am one and many — myself and humanity in flux. I extend a multiple of ways in experience in space. I am myself now, lying on my back in the jungle grass, passing through the ether between satellites and stars. My aging body transmits an ageless life stream. Molecular and atomic replacement change life's composition. Molecules take part in structure and in training, countless trillions of them. After my death, the molecules of my being will return to the earth and sky. They came from the stars. I am of the stars.

Personal correspondence (1839), as quoted in Dostoevsky: His Life and Work (1971) by Konstantin Mochulski, as translated by Michael A. Minihan, p. 17
Context: To study the meaning of man and of life — I am making significant progress here. I have faith in myself. Man is a mystery: if you spend your entire life trying to puzzle it out, then do not say that you have wasted your time. I occupy myself with this mystery, because I want to be a man.