Edmund Husserl (8 April 1859 – 26 April 1938) was a philosopher from Moravia, then part of the Austrian Empire, known as the father of phenomenology.
Pure Phenomenology: Its Method and Its Field of Investigation; Inaugural Lecture at Freiburg im Breisgau (May 3, 1917) 
- Die reine Phänomenologie, ihr Forschungsgebiet und ihre Methode.
- A new fundamental science, pure phenomenology, has developed within philosophy: This is a science of a thoroughly new type and endless scope. It is inferior in methodological rigor to none of the modern sciences. All philosophical disciplines are rooted in pure phenomenology, through whose development, and through it alone, they obtain their proper force.
- To every object there corresponds an ideally closed system of truths that are true of it and, on the other hand, an ideal system of possible cognitive processes by virtue of which the object and the truths about it would be given to any cognitive subject.
- ... bloße Erfahrung ist keine Wissenschaft.
- Experience by itself is not science.
Cartesian Meditations 
- First, anyone who seriously intends to become a philosopher must "once in his life" withdraw into himself and attempt, within himself, to overthrow and build anew all the sciences that, up to then, he has been accepting.
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