Genius: Range of mind, power of imagination, and responsiveness of soul: this is genius. The man of genius has a soul with greater range, can therefore be struck by the feelings of all beings, is concerned with everything in nature, and never receives an idea that does not evoke a feeling. Everything stirs him and everything is retained within him.
When the soul has been moved by an object itself, it is even more affected by the memory of the object. But in a man of genius imagination goes further: it recalls ideas with a more vivid feeling than it received them, because to these ideas are connected a thousand others more appropriate to arouse the feeling.
—Jean-François de Saint-Lambert, from the Encyclopédie.
