In the safety of his manuscripts, Ludwig Wittgenstein was free to endlessly revise, rework and reframe his philosophical thoughts. Thus his published work yields a glimpse of just a small portion of Wittgenstein's philosophical thought-the portion that eventually appeared in print. Yet for Wittgenstein, philosophy was an on-going activity, a process. Only in his dialog with the philosophical community and in his private moments does Wittgenstein's philosophical practice fully come to light. Those public and private occasions are collected here. In Private Occasions, co-editor Alfred Nordmann presents Wittgenstein's diaries from the 1930s to an English audience for the first time. They are accompanied by Wittgenstein's letters to and from friend Ludwig H