Degrees of ability vary, but ...

Degrees of ability vary, but the basic principle remains the same: the degree of a man\'s independence, initiative and personal love for his work determines his talent as a worker and his worth as a man. Independence is the only gauge of human virtue and value. What a man is and makes of himself; not what he has or hasn\'t done for others. There is no substitute for personal dignity. There is no standard of personal dignity except independence.
Degrees of ability vary, but the basic principle remains the same: the degree of a man's independence, initiative and personal love for his work determines his talent as a worker and his worth as a man. Independence is the only gauge of human virtue and value. What a man is and makes of himself; not what he has or hasn't done for others. There is no substitute for personal dignity. There is no standard of personal dignity except independence.

Quotes from the same author

A creative man is motivated by the desire to achieve, not by the desire to beat others.
The truth is not for all men, but only for those who seek it.
The action required to sustain human life is primarily intellectual; everything man needs has to be discovered by his mind and produced by his effort.
If you want to know the one reason that's taking me back, I'll tell you: I cannot bring myself to abandon to destruction all the greatness of the world, all that which was mine and yours, which was made by us and is still ours by right - because I cannot believe that men refuse to see, that they can remain blind and deaf to us forever, when the truth is ours and their lives depend on accepting it.
Run for your life from any man who tells you that money is evil. That sentence is the leper's bell of an approaching looter. So long as men live together on earth and need means to deal with one another--their only substitute, if they abandon money, is the muzzle of a gun.