Shamrock Shamrock A shamrock is a young sprig, used as a symbol of Ireland. Saint Patrick, Ireland's patron saint, is said to have used it as a metaphor for the Christian Holy Trinity. The name "shamrock" comes from Irish , which is the diminutive of the Irish word for plant () and means simply "little plant" or "young plant". "Shamrock" usually refers to either the species (lesser clover, Irish: ) or (white clover, Irish: ). However, other three-leaved plants—such as , , and —are sometimes called shamrocks. The shamrock was traditionally used for its medicinal properties and was a popular motif
What the Tortoise Said to Achilles to suggest that the moral of the dialogue is a particular case of a general lesson, to the effect that the proper "application" of rules governing a form of human activity cannot itself be summed up with a set of "further" rules, and so that "a form of human activity can never be summed up in a set of explicit precepts" (p. 53). Carroll's dialogue is apparently the first description of an obstacle to conventionalism about logical truth, later reworked in more sober philosophical terms by W.V.O. Quine. What the Tortoise Said to Achilles "What the Tortoise Said to Achilles",