And so, the coin was thrown in the air, turning many times, landing sometimes heads and other times tails. Man, the measure of all things, speaks here through my mouth and narrates in my own language that which my eyes have seen. It is likely that out of 10 possible heads I have seen only one true tail, or vice versa. In fact it’s probable, and there are no excuses, for these lips can only describe what these eyes actually see.

che guevara, The motorcycle diaries