Mistakes are almost always of a sacred nature. Never try to correct them. On the contrary: rationalize them understand them thoroughly. After that it will be possible for you to sublimate them.
I do not think that there is any other quality so essential to success of any kind as the quality of perseverance. It overcomes almost everything even nature.
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It is the nature of truth in general as of some ores in particular to be richest when most superficial.
