Character sketch of Sherlock Holmes with textual evidence.

Holmes is described as a tall, thin man, with penetrating eyes. He is intelligent, vain, often impatient, and gifted in the art of observation and deduction.

“I should do so,” Sherlock Holmes remarked impatiently.

‘There is’ “—Holmes’s eyes were gleaming with excitement, and his thin, nervous fingers twitched as he counted the words—“‘danger.’