It is possible to fail in many ways . . . while to succeed is possible only in one way (for which reason also one is easy and the other difficult - to miss the mark easy, to hit it difficult).
What is tolerance? It is the consequence of humanity. We are all formed of frailty and error; let us pardon reciprocally each other's folly - that is the first law of nature.
If you cry ''Forward'' you must be sure to make clear the direction in which to go. Don't you see that if you fail to do that and simply call out the word to a monk and a revolutionary, they will go in precisely opposite directions?