Vigilantly guard your mind against erroneous and destructive thought as you would guard your house against burglars and assassins.

. . . idealism is one of the greatest forces in the world. It makes seeming impossibilities possible and succeeds where prudence fails. But unless the idealist is brave and has the courage to face the truth, his idealism creates nothing.

The habit of being uniformly considerate toward others will bring to you increased happiness.

The good thoughts you send out to others will return to you multiplied.

Those who have attained things worth having in this world have worked while others idled, have persevered while others gave up in despair, have practiced ...the valuable habits of self-denial, industry, and singleness of purpose.

To every problem there is already a solution, whether you know it or not. To every sum in there is already a correct answer, whether the mathematician has found it or not.

Learn to depend upon yourself by doing things in accordance with your own way of thinking.