“To cut and tighten sentences is the secret of mastery.”
“The secret of joy is the mastery of pain.”
“The secret of success lies in this simple sentence: Why not?”
“The mastery of nature is vainly believed to be an adequate substitute for self mastery.”
“One can have no smaller or greater mastery than mastery of oneself.”
“I wasn't sure how to answer. Could I tell him that one Secret of Adulthood is "Never start a sentence with the words 'No offense'"?”