We would be in a nasty position indeed if empirical science were the only kind of science possible.

To every object there correspond 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.

Philosophers, as things now stand, are all too fond of offering criticism from on high instead of studying and understanding things from within.

Psychologically experienced consciousness is therefore no longer pure consciousness; construed Objectively in this way, consciousness itself becomes something transcendent, becomes an event in that spatial world which appears, by virtue of consciousness, to be transcendent.

Without troublesome work, no one can have any concrete, full idea of what pure mathematical research is like or of the profusion of insights that can be obtained from it.

I had to philosophize. Otherwise, I could not live in this world.

To begin with, we put the proposition: pure phenomenology is the science of pure consciousness.