The aim of scientific work is truth. While we internally recognise something as true, we judge, and while we utter judgements, we assert.
Gottlob FregeI compare arithmetic with a tree that unfolds upwards in a multitude of techniques and theorems while the root drives into the depths.
Gottlob FregeYour discovery of the contradiction caused me the greatest surprise and, I would almost say, consternation, since it has shaken the basis on which I intended to build my arithmetic.
Gottlob Frege'Facts, facts, facts,' cries the scientist if he wants to emphasize the necessity of a firm foundation for science. What is a fact? A fact is a thought that is true. But the scientist will surely not recognize something which depends on men's varying states of mind to be the firm foundation of science.
Gottlob Frege