999 failures for 1 success

According to Swami Vivekananda, "in all our action , error and mistakes are our only teacher." who commits mistake ,the path of truth is attrainable by him only.Without failure nobody can be success. We must commit 999 failure for one great and historical success. Thomas Elva Edison also had same experience of failure during inventing bulb.He had faced failure 999 times and successed last time. Fact is that ,failure is chance to learn and correct ourself.So, childrens are not to be answered recently. Let them experience and fail themselves. Then they will know themselves.
Tree never makes mistake, nor do stones fall into error. Man is prone to err, and it is the man who become God-on-earth. Charles C. Manz taech us about the power of failure in his book, ' The power of failure:

"Failure is the foundation of success, and the means by which it is achieved."

-Lao Tzu