The crossword solution for the term COMMON QUOTATION ATTRIBUTION: ABBR. is SHAK, which stands for William Shakespeare. William Shakespeare was an English poet, playwright, and actor who is widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist. He is often referred to as England's national poet and the 'Bard of Avon'. His works, including collaborations, consist of approximately 39 plays, 154 sonnets, two long narrative poems, and a few other verses, some of which are considered to be the most influential works in English literature. Many of his famous quotes have become common quotations, such as 'To be or not to be' and 'All the world's a stage'.