While in Hicks's analysis there is the idea of a yield curve normally upward sloping, Keynes does not appear to envisage a systematic positive spread between long-term and short-term interest rates. This is mainly due a difference in their notions of liquidity, and in particular to Keynes's disbelief in the possibility of quantifying the premium required to induce investors to hold long-term rather than short-term assets. It follows that Hicks's and Keynes's explanations of the term structure are neither identical nor can be assimilated to the notion of ‘preferred habitat’, as suggested in some literature.