This volume is truly and doubly a "Treasury." With its easy to read structure of brief entries in alphabetic order, it is a treasure house of observations on life and death, civilization and savagery, the universe and beyond-the Great Topics which have challenged man's thought, whether in passionate public debate or in the lonely stillness of his nights, ever since he first raised his eyes to the stars. At the same time, this is a "personal treasury" of the intimate thoughts of an outstanding modern philosopher on these Great Topics.