"Rules are not necessarily sacred, principles are."

"It is a terrible thing to look over your shoulder when you are trying to lead -- and find no one there."

"When you see a rattlesnake poised to strike you, do not wait until he has struck before you crush him."

"There are many ways of going forward, but only one way of standing still."

"Put two or three men in positions of conflicting authority. This will force them to work at loggerheads, allowing you to be the ultimate arbiter."

"Our most basic common link is that we all inhabit this planet. We all breathe the same air. We all cherish our children's future. And we are all mortal."

"I think 'Hail to the Chief' has a nice ring to it."

"Too often we... enjoy the comfort of opinion without the discomfort of thought."

"Our problems are man-made, therefore they may be solved by man. No problem of human destiny is beyond human beings."

"Children are the world's most valuable resource and its best hope for the future"

"Modern cynics and skeptics... see no harm in paying those to whom they entrust the minds of their children a smaller wage than is paid to those to whom they entrust the care of their plumbing."

"We want to be first; not first if, not first but; but first!"

"The New Frontier I speak of is not a set of promises -- it is a set of challenges. It sums up not what I intend to offer the American people, but what I intent to ask of them."

"The only unchangeable certainty is that nothing is certain or unchangeable"

"I have just received the following wire from my generous Daddy. It says, ''Dear Jack: Don't buy a single vote more than is necessary. I'll be damned if I am going to pay for a landslide.''"

"Sure it's a big job; but I don't know anyone who can do it better than I can."

"Don't blame the marketing department. The buck stops with the chief executive."

"Competition is a sin."

"One should not lose one's temper unless one is certain of getting more and more angry to the end."

"Why should we honour those that die upon the field of battle? A man may show as reckless a courage in entering into the abyss of himself."

"You think it horrible that lust and rageShould dance attendance upon my old age;They were not such a plague when I was young;What else have I to spur me into song?"

"If I make the lashes darkAnd the eyes more brightAnd the lips more scarlet,Or ask if all be rightFrom mirror after mirror,No vanity's displayed:I'm looking for the face I hadBefore the world was made."

"An aged man is but a paltry thing, a tattered coat upon a stick"

"Every conquering temptation represents a new fund of moral energy. Every trial endured and weathered in the right spirit makes a soul nobler and stronger than it was before."