"These doubts did not halt mathematical creation. Technicians working on the superstructure did not drop their tools a…"

"I shall now address you on the subject of the present situation in research in the foundations of mathematics. Since …"

"The truth is that the mathematical sciences are growing in complete security and harmony. The ideas of Dedekind, Poin…"

"As soon as I have put it into order I intend to write and if possible to publish a work on parallels. At this moment,…"

"I should regard it as a great misfortune if you were to allow yourself to be deterred by the 'clamors of the Bœotians…"

"Now Gödel's proof, Russell's original paradox, all these things, all stem from one common root which is inherent in a…"

"The world is totally connected. Whatever explanation we invent at any moment is a partial connection, and its richnes…"

"Mathematics is in its development entirely free and is only bound in the self-evident respect that its concepts must …"

"In the summer of 1914 I attended Frege's course, Logik in der Mathematik. Here he examined critically some of the cus…"

"Fourier's analytical theory of heat (final form, 1822), devised in the Galileo-Newton tradition of controlled observa…"