We do not have to wait for future discoveries in connection with the powers of the human mind for evidence that the mind is the greatest force known to mankind. We know, now, that any idea, aim or purpose that is fixed in the mind and held there with a will to achieve or attain its physical or material equivalent, puts into motion powers that cannot be conquered.
Napoleon HillLack of persistence is one of the major causes of failure. Moreover, experience with thousands of people has proved that lack of persistence is a weakness common to the majority of men. It is a weakness which may be overcome with effort.
Napoleon HillWhen your desires are strong enough you will appear to possess superhuman powers to achieve.
Napoleon HillNapoleon Hill saw this law of transmutation as the seed of equivalent benefit: With every disappointment, heartbreak, or failure, there exists an equal (usually greater) positive benefit.
Napoleon Hill