2 | Campanile: The date of Creation 4004 BC
Archbishop James Ussher (1581-1656), was one of TCD's very first students. His infamous calculation of the date of Creation, though now often ridiculed, was scientifically sophisticated for its time, and his book collection formed the nucleus of Trinity's great library.
Another noted early scientist associated with TCD was the philosopher William Molyneux (1656-'98). Philosophers still debate a question he posed about perception and sight, known asMolyneux's problem.