“This problem is the most difficult and the last to be solved by mankind.”
Sixth Thesis
Idea for a Universal History from a Cosmopolitan Point of View (1784)
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Immanuel Kant 200
German philosopher 1724–1804Related quotes

“Most problems do not get solved. They get superseded by other concerns.”
1980s–1990s, Barbarians inside the Gates and Other Controversial Essays (1999)

“Most people's problems would be solved if they would only give more things a chance.”
Source: The Storied Life of A.J. Fikry
as quoted by D. D. Ryutov in [G.I. Budker: reflections & remembrances, by Boris N. Breizman, Springer, 1993, http://books.google.com/books?id=e0bxFrmNtykC&printsec=frontcover#PRA1-PA278,M1, 1-56396-070-2, 278]

From 1980s onwards, Grunch of Giants (1983)

“The fear of being different prevents most people from seeking new ways to solve their problems.”
Rich Dad Poor Dad: What the Rich Teach Their Kids About Money-That the Poor and the Middle Class Do Not!