A scientific approach means knowing what one knows and what one doesn't. Absolute or complete knowledge is unscientific.

When language is used without true significance, it loses its purpose as a means of communication and becomes an end in itself.

The great philosophers and the great works are standards for the selection of what is essential. Everything that we do in studying the history of philosophy ultimately serves their better understanding.

It has become obligatory to fulfil a function which shall in some way be regarded as useful to the masses...Even an articulated mass always tends to become unspiritual and inhuman. It is life without existence, superstition without faith. It may stamp all flat; it is disinclined to tolerate independence and greatness, but prone to constrain people to become as automatic as ants.

When in our isolation we see our lives seeping away as a mere succession of moments, tossed meaninglessly about by accidents and overwhelming events; when we contemplate a history that seems to be at an end, leaving only chaos behind it, then we are impelled to raise ourselves above history.

The moment is the sole reality.

At the present moment, the security of coherent philosophy, which existed from Parmenides to Hegel, is lost.