That is the worst moment, when you feel you have lost / The desires for all that was most desirable, / Before you are contented with what you can desire; / Before you know what is left to be desired; / And you go on wishing that you could desire / What desire has left behind.
T. S. EliotKnowledge is invariably a matter of degree: you cannot put your finger upon even the simplest datum and say this we know.
T. S. Eliot