“I am whatever was, or is, or will be; and my veil no mortal ever took up.”

Letter (December 1851); as quoted in The Great Influenza: The Epic Story of the Deadliest Plague In History (2004) by John M. Barry
Variant translations:
I am on the verge of mysteries and the veil is getting thinner and thinner. The nights seem to me too long... I am often scolded by Madame Pasteur, but I tell her I shall lead her to fame.
Microbe Hunters (1926) by Paul De Kruif
My plan of study is traced for this coming year... I am hoping to develop it shortly in the most successful manner... I think that I have already told you that I am on the verge of mysteries, and that the veil which covers them is getting thinner and thinner. The nights seem to me too long, yet I do not complain... I am often scolded by Mme. Pasteur, but I console her by telling her that I shall lead her to fame.
The Life of Pasteur (1916) by René Vallery-Radot

Combining alchemical assertions
Bollingen Tower inscriptions (1950)
Context: I am an orphan, alone; nevertheless I am found everywhere. I am one, but opposed to myself. I am youth and old man at one and the same time. I have known neither father nor mother, because I have had to be fetched out of the deep like a fish, or fell like a white stone from heaven. In woods and mountains I roam, but I am hidden in the innermost soul of man. I am mortal for everyone, yet I am not touched by the cycle of aeons.

Grida Erotimo allor: l'arte maestra
Te non risana, o la mortal mia destra.
Canto XI, stanza 74 (tr. Wickert)
Gerusalemme Liberata (1581)

Solitude of Self (1892)

Act III, scene i.
Manfred (1817)

Letter written to his wife after being wounded. (June 1864), as quoted in In the Hands of Providence : Joshua L. Chamberlain and the American Civil War (2001) by Alice Rains Trulock, p. 215
Context: My darling wife I am lying mortally wounded the doctors think, but my mind & heart are at peace Christ is my all-sufficient savior. I go to him. God bless & keep & comfort you, precious one. You have been a precious wife to me. To know & love you makes life & death beautiful. Cherish the darlings & give my love to all the dear ones. Do not grieve too much for me. We shall all soon meet Live for the children Give my dearest love to Father, Mother & Sallie & John Oh how happy to feel yourself forgiven God bless you evermore precious precious one Ever yours, Lawrence.

An account of an experience of transcendent awareness, soon after a contest where, unarmed, he defeated a naval officer armed with a bokken (wooden sword) without harming him; as quoted in Aikido (1985) by Kisshomaru Ueshiba <!-- Hozansha Publications, Tokyo -->
Context: I felt the universe suddenly quake, and that a golden spirit sprang up from the ground, veiled my body, and changed my body into a golden one. At the same time my body became light. I was able to understand the whispering of the birds, and was clearly aware of the mind of God, the creator of the universe.
At that moment I was enlightened: the source of Budo is God's love — the spirit of loving protection for all beings … Budo is not the felling of an opponent by force; nor is it a tool to lead the world to destruction with arms. True Budo is to accept the spirit of the universe, keep the peace of the world, correctly produce, protect and cultivate all beings in nature.

The Rubaiyat (1120)