
James Pierpont
(16 Jun 1866  9 Dec 1938)
American mathematician who spent his career at Yale University, where he country studied under him. He was a pioneer in the introduction of European mathematical thought to America. He was the author of many articles and monographs, and books including The Theory of Functions of Complex Variables and The Theory of Function of Real Variables.

Science Quotes by James Pierpont (4 quotes)
One of the most conspicuous and distinctive features of mathematical thought in the nineteenth century is its critical spirit. Beginning with the calculus, it soon permeates all analysis, and toward the close of the century it overhauls and recasts the foundations of geometry and aspires to further conquests in mechanics and in the immense domains of mathematical physics.
A searching examination of the foundations of arithmetic and the calculus has brought to light the insufficiency of much of the reasoning formerly considered as conclusive.
— James Pierpont
In History of Mathematics in the Nineteenth Century', Congress of Arts and Sciences (1906), Vol. 1, 482. As quoted and cited in Robert Ιdouard Moritz, Memorabilia Mathematica; Or, The Philomaths Quotationbook (1914), 113114.
Surely this is the golden age of mathematics.
— James Pierpont
In 'History of Mathematics in the Nineteenth Century', Congress of Arts and Sciences (1905), Vol. 1, 493. As quoted and cited in Robert Ιdouard Moritz, Memorabilia Mathematica; Or, The Philomaths Quotationbook (1914), 108.
The extraordinary development of mathematics in the last century is quite unparalleled in the long history of this most ancient of sciences. Not only have those branches of mathematics which were taken over from the eighteenth century steadily grown, but entirely new ones have sprung up in almost bewildering profusion, and many of them have promptly assumed proportions of vast extent.
— James Pierpont
In The History of Mathematics in the Nineteenth Century', Congress of Arts and Sciences (1905), Vol. 1, 474. As cited and wuoted in Robert Ιdouard Moritz, Memorabilia Mathematica; Or, The Philomaths Quotationbook (1914), 110.
Without doubt one of the most characteristic features of mathematics in the last century is the systematic and universal use of the complex variable. Most of its great theories received invaluable aid from it, and many owe their very existence to it.
— James Pierpont
In 'History of Mathematics in the Nineteenth Century', Congress of Arts and Sciences (1905), Vol. 1, 474. As quoted and cited in Robert Ιdouard Moritz, Memorabilia Mathematica; Or, The Philomaths Quotationbook (1914), 115.
In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion.
(1987) 
Carl Sagan
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