Is there a connection between handwriting and personality?

When we receive a letter from a friend it is not necessary to open it in order to know from whom it comes. A glance at the address on the envelope is sufficient. The style of the handwriting tells us at once who the writer is. We recognise him by his penmanship as readily as we would by his voice.

This shows us very convincingly that there must be some sort of relationship between the style of handwriting and the personality of the writer.
Another familiar evidence of this is the fact that no two persons write exactly alike, notwithstanding that hundreds of thousands of us learned to write from the same copybooks and were taught to form our letters in precisely the same way.

Now, if handwriting bore no relationship to personality and was not influenced by the character of the individual, we would all be writing the beautiful Spencerian copperplate we were taught in our school days. But, as it is, not one in fifty thousand writes in this manner five years after leaving school.

Each one of us has modified the copybook style in accordance with his individual character. Each one has unconsciously adopted a style of handwriting that is best suited to his tastes and inclinations and has consequently given to it a distinctive character.

Like speech or gesture, handwriting serves as a means for the expression of thought; and in expressing our thoughts we give expression to ourselves.

When once the art of writing is learned we are no longer conscious of the mental and manual effort required to form the letters. It becomes as it were a second nature to us. We do it mechanically, just as we form our words when talking, without realising the complex processes of mind and muscle that it involves.

It is plain, therefore, that a person's handwriting, or chirography, is really a part of himself. It is an expression of his personality and is as characteristic of him as is his gait or his tone of voice.

Source: Graphology or How to Read Character from Handwriting BY SIMON ARKE American Institute of Graphology 305 Lenman Building Washington, D. C. 1903