'''[[Ludwig Wittgenstein|Ludwig Josef Johann Wittgenstein''' ]] ([[April 26]], [[1889]] – [[– April 29]], [[1951]]) was an [[Austria]]n Austrian [[philosopher]] who contributed several ground-breaking works to contemporary [[philosophy]], primarily on the foundations of [[logic]], the philosophy of [[philosophy of mathematics]], the philosophy of [[philosophy of language]], and the philosophy of [[philosophy of mind]]. He is widely regarded as one of the most influential [[philosophers ]] of the [[20th century]].
{{LA}}pp. 3, 34
