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"The hardest thing in the world to understand is income taxes."

— Albert Einstein

January 1, 1970

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Added on April 10, 2026

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Albert Einstein

Original Language: English

Sources

Attributed by his friend Leo Mattersdorf, who also said that "From the time Professor Einstein came to this country until his death, I prepared his income tax returns and advised him on his tax problems." In a letter to Time magazine, 22 February 1963. See this post from The Quote Investigator for more background.

https://en.wikiquote.org/wiki/Albert_Einstein

Attributed by his friend Leo Mattersdorf, who also said that "From the time Professor Einstein came to this country until his death, I prepared his income tax returns and advised him on his tax problems." In a letter to Time magazine, 22 February 1963. See this post from The Quote Investigator for more background.