Even the most ordinary experience of a thing or event in time can never be fully or adequately described in words. The experience of seeing the sky or having neuralgia is incommunicable; the best we can do is to say 'blue' or 'pain,' in the hope that those who hear us may have had experiences similar to our own and so be able to supply their own version of the meaning. God, however, is not a thing or event in time, and the time-bound words which cannot do justice even to temporal matters are even more inadequate to the intrinsic nature and our own unitive experience of that which belongs to an incommensurably different order. To suppose that people can be saved by studying and giving assent to formulae is like supposing that one can get to Timbuctoo by poring over a map of Africa. Maps are symbols, and even the best of them are inaccurate and imperfect symbols. But to anyone who really wants to reach a given destination, a map is indispensably useful as indicating the direction in which the traveller should set out and the roads which he must take.