Greatness of mind becomes an object of love only when the power at work in it itself has a noble character

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

The moment is the sole reality.

Philosophy is tested and characterised by the way in which it appropriates its history.

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

Only then, approaching my fortieth birthday, I made philosophy my life's work.

What makes us afraid is our great freedom in the face of the emptiness that has still to be filled.