Question: How old was Einstein when he died?
About the article "Albert Einstein", section "Modern quantum theory".

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Max Talmey (1869–1941) was a Polish ophthalmologist best known for mentoring Albert Einstein and his success in treating cataracts.
Born into a poor Jewish family, Talmey first met Albert Einstein when Einstein was ten years old.
Talmey was then attending Medical School in Germany.
Talmey was a weekly lunch guest of Einstein's family.
He gave Albert Einstein a number of books about science, including works by Aaron Bernstein.
Talmey published an account of Einstein's early life, "Personal Recollections of Einstein's Boyhood and Youth", in "Scripta Mathematica".
He also published an account of the Einstein's Theory of Relativity.
Talmey moved to Mount Sinai Hospital in 1895 where he served as an Ophthalmologist.
He published scholarly works on cataracts and infant paralysis.
In addition to his medical career, Talmey was a harsh critic of Psychoanalysis.
He also supported the development of Esperanto, and also constructed his own language, which he called Gloro.
He performed public readings of works translated into Gloro, which had similarities to Latin and Spanish.
He died in 1941. 
Bernard Einstein was the son of Hans Albert Einstein and Frieda Einstein (née Knecht), who had married in 1927 in Switzerland.
Bernard Einstein was born on July 10, 1930 in Dortmund, Germany where Hans Albert was involved in a bridge building project.
Hans Albert was the only one of Albert Einstein's three children to marry and have children.
Hans Albert's sister, Lieserl Einstein, is assumed to have died in infancy, although it has been suggested that she was given up for adoption.
Hans Albert's younger brother Eduard Einstein developed severe schizophrenia in early adulthood and died at age 55, and had no children.
Bernard's brother, Klaus, was born in 1932 and died at age 6 of diphtheria in Clemson, South Carolina, United States.
Frieda had two more sons that died in early infancy.
Eventually Hans Albert and Frieda adopted a girl, Evelyn, shortly after she was born in 1941.
One year after Frieda died in 1958, Hans Albert married Elizabeth Roboz, a neurochemist.
Bernard spent his early years in Switzerland until the age of eight when his family moved to South Carolina.
Albert Einstein was very worried about the rise of Nazi Germany and encouraged his son Hans Albert to emigrate to the United States as he himself had done in 1933.
Hans Albert heeded this advice, and moved his family to Greenville, South Carolina where he was a civil engineer working with the US Corps of Engineers.
Bernard spent his teenage years in Pasadena where his father was a professor at the California Institute of Technology, and in Berkeley, where his father was a professor at the University of California.
Bernard first met his grandfather Albert when he was two years old.
As a boy he travelled alone to spend time with Albert in New Jersey, and at Saranac Lake in upstate New York.
Bernard recounted to his son Thomas that he used to irritate his grandfather because he would urinate out the window directly above Albert's study in Princeton.
At Saranac Lake he enjoyed sailing with his grandfather.
Apparently Albert Einstein's favorite time to sail was when there was very little wind.
According to Bernard, his grandfather enjoyed the challenge of harnessing whatever little bit of breeze he could capture.
The sailing tradition was carried on by Albert's son, Hans Albert who loved to sail with Bernard, and Bernard's children on the San Francisco Bay.
Albert Einstein died in April 1955.
Having shared his love of music with his grandson, he bequeathed Bernard his violin in addition to a modest sum of money.
Bernard's children are Thomas, Paul, Eduard, Mira, and Charles. 
Einstein was a prominent supporter of both Labor Zionism and efforts to encourage Jewish-Arab cooperation.
He supported the creation of a Jewish national homeland in the British mandate of Palestine but was initially opposed to the idea of a Jewish state with borders, an army, and a measure of temporal power.”Fred Jerome in his "Einstein on Israel and Zionism: His Provocative Ideas About the Middle East" argues that Einstein was a Cultural Zionist who supported the idea of a Jewish homeland but opposed the establishment of a Jewish state in Palestine preferring a bi-national state with “continuously functioning, mixed, administrative, economic, and social organizations.” In 1931, The Macmillan Company published "About Zionism: Speeches and Lectures by Professor Albert Einstein".
Querido, an Amsterdam publishing house, collected eleven of Einstein's essays into a 1933 book entitled "Mein Weltbild", translated to English as "The World as I See It"; Einstein's foreword dedicates the collection "to the Jews of Germany".
In the face of Germany's rising militarism, Einstein wrote and spoke for peace.
Einstein publicly stated reservations about the proposal to partition the British Mandate of Palestine into independent Arab and Jewish countries.
In a 1938 speech, "Our Debt to Zionism", he said: "I should much rather see reasonable agreement with the Arabs on the basis of living together in peace than the creation of a Jewish state.
My awareness of the essential nature of Judaism resists the idea of a Jewish state with borders, an army, and a measure of temporal power, no matter how modest.
I am afraid of the inner damage Judaism will sustain—especially from the development of a narrow nationalism within our own ranks, against which we have already had to fight strongly, even without a Jewish state.
...
If external necessity should after all compel us to assume this burden, let us bear it with tact and patience.
"In a 1947 letter to Indian Prime Minister Jawaharlal Nehru intended to persuade India to support the establishment of a Jewish state, Einstein stated that the Balfour Declaration's proposal to establish a national home for Jews in Palestine "redresses the balance" of justice and history.
The United Nations did divide the mandate, demarcating the borders of several new countries including the State of Israel, and war broke out immediately.
Einstein was one of the authors of an to the "New York Times" in 1948 deeply criticizing Menachem Begin's Herut (Freedom) Party for the Deir Yassin massacre likening it to "the Nazi and Fascist parties" and stated "The Deir Yassin incident exemplifies the character and actions of the Freedom Party".
The letter stated clear concerns for the future of Israel if the Freedom Party continued to gain power.
When President Harry Truman recognized Israel in May 1948, Einstein declared it “the fulfillment of our (Jewish) dreams.” Einstein also supported vice president Henry Wallace’s Progressive Party during 1948 Presidential election which also advocate pro-Soviet and pro-Israel foreign policy.
Einstein served on the Board of Governors of The Hebrew University of Jerusalem.
In his Will of 1950, Einstein bequeathed literary rights to his writings to The Hebrew University, where many of his original documents are held in the Albert Einstein Archives.
When President Chaim Weizmann died in 1952, Einstein was asked to be Israel's second president, but he declined, stating that he had "neither the natural ability nor the experience to deal with human beings."
He wrote: "I am deeply moved by the offer from our State of Israel, and at once saddened and ashamed that I cannot accept it."
Copernicus is Doc's dog from 1955.
He appears in the first film without his name mentioned.
Later, in the third film, Doc mentions the dog's name.
Like his other dogs, Copernicus was used in many of Doc's experiments.
When Copernicus died, he was replaced by Einstein. 
A holographic representation of Einstein, played by Jim Norton appeared in two episodes of ', in the first episode of the two-part episode ' which starts on the "Enterprise" with a game of poker being played by holodeck representations of Einstein, Sir Isaac Newton, and Stephen Hawking (portrayed by himself), all as programmed by Lt.
Commander Data playing as the fourth person in the game.
In the television series "Eureka", the town of Eureka was established when President Harry S. Truman commissioned development of a top-secret lab, staffed by Albert Einstein, after World War II and it became home to the scientists and their families working there.
In the "Red Dwarf" episode "Meltdown", he is one of the last good waxdroids on waxworld, where he argues with Pythagoras over the solution involving triangles.
In "The Dreamstone", in the episode "Urpgor's Island", Urpgor, when in his mud bath, trying to think of ideas of getting the Dreamstone, makes a face of Albert Einstein for split seconds, whilst discussing of how intelligent he is.
In 2011, Einstein was depicted in a special mini-episode of "Doctor Who", called "Death Is the Only Answer", and was played by Nickolas Grace.