“The secret of a good memory is attention, and attention to a subject depends upon our interest in it. We rarely forget that which has made a deep impression on our minds.”

“Thoughts lead on to purposes; purposes go forth in action; actions form habits; habits decide character; and character fixes our destiny.”

“Duty performed gives clearness and firmness to faith, and faith thus strengthened through duty becomes the more assured and satisfying to the soul.”

“If you would thoroughly know anything, teach it to others. One who ceases to learn cannot adequately teach.”

“Our survival as spiritual beings depends upon our ability to open our wild hearts in love and resonance with all of nature.”

“Surely there is something in the unruffled calm of nature that overawes our little anxieties and doubts; the sight of the deep-blue sky and the clustering stars above seems to impart a quiet to the mind.”

“The year was 1922, and the Curies had transformed plain earth into something rare and unimagined. A secret of the universe has been revealed, and a restless world dreamed of transformation. [p. 205]”