Notion without intuition is empty, intuition without notion is blind.

God put a secret art into the forces of Nature so as to enable it to fashion itself out of chaos into a perfect world system.

But a lie is a lie, and in itself intrinsically evil, whether it be told with good or bad intents.

Even philosophers will praise war as ennobling mankind, forgetting the Greek who said: 'War is bad in that it begets more evil than it kills.'

Melancholy characterizes those with a superb sense of the sublime.

Freedom is that faculty that enlarges the usefulness of all other faculties.

The light dove, in free flight cutting through the air the resistance of which it feels, could get the idea that it could do even better in airless space. Likewise, Plato abandoned the world of the senses because it posed so many hindrances for the understanding, and dared to go beyond it on the wings of the ideas, in the empty space of pure understanding.