Full Idea
Philosophers as 'Why?' and 'What?' without knowing clearly what their questions are. They are expressing a feeling of mental uneasiness.
Gist of Idea
Philosophers express puzzlement, but don't clearly state the puzzle
Source
Ludwig Wittgenstein (Lectures 1930-32 (student notes) [1931], B I.1)
Book Reference
Wittgenstein,Ludwig: 'Lectures in Cambridge 1930-32', ed/tr. Lee,Desmond [Blackwell 1980], p.22
A Reaction
He suggests it is childish to express puzzlement, instead of asking for precise information. How odd. All enquiries start with vague puzzlement, which gradually comes into focus, or else is abandoned.