The striking characteristiscs of Darwin's sample here is the tiny size of the writing, the use of space, the downward trend of the lines, and the lightening speed. The t-bars are long, strong, and overly high; and the overall pressure is inconsistent.

Darwin was a loner, even a hermit. He has the typical aspects of what we call "science writing" which explains the miniscule size. He was driven and set extrememly high goals. Although he was a loner, when he needed to work with someone; it was Darwin who was the boss. He has leadership qualities.

At the time this sample was written, however, he was suffering either from physical disabilities. [Notice the lack of pressure in his PPI] He was a difficult man to encounter, would be impatient, and demanding. He despised waste.

Darwin's intellect would put him in the top 2% of mankind. This is evidenced by the extremely fast writing, creative deviations, and simplified forms. Genius would apply to Darwin. Along with the tremendous intellect, the high t-bars indicate that his intellect rose above that which was known. He was his own thinker, and lived in his own intellectual world with few if any peers.