"Old age, believe me, is a good and pleasant thing. It is true you are gently shouldered off the stage, but then you are given such a comfortable front stall as spectator."
"The expectations of life depend upon diligence; the mechanic that would perfect his work must first sharpen his tools."
"When you know a thing, to hold that you know it, and when you do not know a thing, to allow that you do not know it - this is knowledge."
"Real knowledge is to know the extent of one's ignorance."
"Wisdom, compassion, and courage are the three universally recognized moral qualities of men."
"Choose a job you love, and you will never have to work a day in your life."
"When it is obvious that the goals cannot be reached, don't adjust the goals, adjust the action steps."
"By three methods we may learn wisdom: First, by reflection, which is noblest; Second, by imitation, which is easiest; and third by experience, which is the bitterest."
"The more man meditates upon good thoughts, the better will be his world and the world at large."
"The will to win, the desire to succeed, the urge to reach your full potential... these are the keys that will unlock the door to personal excellence."
"Life is really simple, but we insist on making it complicated."
"The cautious seldom err."
"They must often change, who would be constant in happiness or wisdom."
"Only the wisest and stupidest of men never change."
"The superior man understands what is right; the inferior man understands what will sell."
"Everything has beauty, but not everyone sees it."
"When anger rises, think of the consequences."