What does the word logician mean?

Usage examples for logician

  1. In regard to dignity and interest, these higher studies seem to have greatly the advantage over particular grammar; but who is willing to be an ungrammatical poet, orator, or logician? – The Grammar of English Grammars by Goold Brown
  2. To the logician all things should be seen exactly as they are, and to underestimate one's self is as much a departure from truth as to exaggerate one's own powers. – Memoirs of Sherlock Holmes by Sir Arthur Conan Doyle