For this reason, if there perhaps occurs only one single word for a certain concept that, in one meaning already introduced, exactly suits this concept, and if it is of great importance to distinguish it from other related concepts, then it is advisable not to be prodigal with that word or use it merely as a synonym or an alternative in place of other words, but rather to preserve it carefully in its proper meaning; for it may otherwise easily happen that when the expression does not particularly occupy our attention but is lost in a heap of others having very divergent meaning, the thought which it alone can preserve may get lost as well.