When the space is very wide it denotes excessive impetuosity and lack of continuity of purpose, a person who pushes himself forward on all occasions, a great desire for notoriety and one continually changing his plans as far as the world is concerned.

When this line is excessively open or separate from the Line of Life, the brain seems to be an extremely excitable one.

The subject suffers greatly from excessive blood to the head, mental hysteria, sleeplessness, and all things that affect the brain.

If the Line of Head is badly formed with islands, or a broad line with breaks and hair lines (1-1, Plate IV.), it is just as much a mark of another form of insanity as the Line of Head curving downwards at the wrist, but with the line mentioned the type is inclined to be morbid with a tendency to suicide.
This other Line of Head with islands indicates the character that will be more likely to be excitable and fly into a temper and kill other people.
A Line of Head not too widely separated and either one end of it commencing on the Mount of Jupiter, or with its main branch from the Mount of Jupiter (4-4, Plate III.), is one of the most brilliant marks of all.

The student must, however, carefully establish this difference of the Line of Head in his own mind, as well as the termination or the ending of this line.