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Nature governs man by no principle more fixed than that which leads him to pursue his interest.

In presence of Nature's grand convulsions, man is powerless.

Till now man has been up against Nature; from now on he will be up against his own nature.

Man's heart away from nature becomes hard.

One thing you cannot control is nature.

When man learns to understand and control his own behavior as well as he is learning to understand and control the behavior of crop plants and domestic animals, he may be justified in believing that he has become civilized.

A strong, successful man is not the victim of his environment. He creates favorable conditions. His own inherent force and energy compel things to turn out as he desires.

Man must cease attributing his problems to his environment, and learn again to exercise his will - his personal responsibility in the realm of faith and morals.