All perception is a gamble.

In all the areas within which the spiritual life of humanity is at work, the historical epoch wherein fate has placed us is an epoch of stupendous happenings.

Experience by itself is not science.

Natural objects, for example, must be experienced before any theorizing about them can occur.

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

Pure phenomenology claims to be the science of pure phenomena. This concept of the phenomenon, which was developed under various names as early as the eighteenth century without being clarified, is what we shall have to deal with first of all.

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