I am fascinated by his gentle personality, his ability to attract lifelong disciples, his tolerance of human weakness, his perennial optimism. ... Peano may not only be classified as a 19th century mathematician and logician, but because of his originality and influence, must be judged one of the great scientists of that century.
--
Hubert C. Kennedy, in Peano : Life and Works of Giuseppe Peano (1980)Giuseppe Peano
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If Engels had not been the constant companion in arms of Marx in the revolutionary struggles of the 19th century, there is no doubt that he would be remembered chiefly as one of the foremost scientist-philosophers of the century. It was an ironical tribute paid to the correctness of his views as to the relations between politics and ideology that he suffered complete neglect from the scientists of the Victorian age. But time now has taken its revenge, and Engels’ contemporary views on 19th century science seem to us now in the 20th far more fresh and filled with understanding than those of the professional philosophers of science of his day, who for the most part are completely forgotten, while the few that linger on, such as Lange and Herbert Spencer, are only quoted as examples of the limitations of their times.
John Desmond Bernal
I like Houston. It's the last great 19th-century city. Houston has a spirit about it that is truly American, an optimism. People there aren't afraid to try something new.
Philip Johnson
If the 19th [century] was the century of the individual (liberalism means individualism), you may consider that this is the "collective" century, and therefore the century of the state.
Benito Mussolini
There can be no place in a 21st-century parliament for people with 15th-century titles upholding 19th-century prejudices.
Paddy Ashdown
Douglas MacArthur was the last great 19th century soldier, while George Marshall was the first great 20th century soldier.
Douglas MacArthur
Peano, Giuseppe
Pearce, Jonathan
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