"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."

“No one in our century has raised the call for philosophy as a rigorous science with such clarity, purity, vigor, and breadth as Husserl.”

“Whoever wishes to define the conceptual invariants of natural beauty would make himself as ridiculous as Husserl did when he reports that while ambulating he perceived the green freshness of the lawn. Whoever declaims on natural beauty verges on poetastery. Only the pedant presumes to distinguish the beautiful from the ugly in nature, but without such distinction the concept of natural beauty would be empty.”

“... bloße Erfahrung ist keine Wissenschaft.”

“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.”

“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.”