A three-year-old is not half a six-year-old. They're three.
Sir Ken Robinson

Sir Ken Robinson (born 4 March 1950) is an author, speaker, and international advisor on education in the arts to government, non-profits, education, and arts bodies. He was Director of The Arts in Schools Project (1985–89), Professor of Arts Education at the University of Warwick (1989–2001), and was knighted in 2003 for services to education.