A grook is a short aphoristic poetic form, created by the Danish poet, designer and scientist - Piet Hein. These aphoristic poems are succinct and terse sayings focused on a general truth, or astute observation. The poems are spirit-building and reflective. The grooks are multi-faceted and feature irony, satire, paradox, brevity, precise use of language, rhythm and rhyme. The poems are brief.