"Character is much easier kept than recovered." - Thomas Paine 

"You may delay, but time will not." - Benjamin Franklin 

"It is never too late to be what you might have been." - George Eliot, English Victorian novelist

"Men are wise in proportion, not to their experience, but to their capacity for experience." - Dr. Samuel Johnson

"Perhaps the most valuable result of all education is the ability to make yourself do the thing you have to do, when it ought to be done, whether you like it or not." - Aldous Huxley

"Patriotism is the last refuge of the scoundrel." - Samuel Johnson, English philosopher

"And in the end it's not the years in your life that count. It's the life in your years." - Abraham Lincoln

"The unexamined life is not worth living." - Socrates, Greek philosopher

"Ordinary riches can be stolen, real riches cannot. In your soul are infinitely precious things that cannot be taken from you." - Oscar Wilde

"I do not think much of a man who is not wiser today than he was yesterday." - Abraham Lincoln

"The worth of the state, in the long run, is the worth of the individuals composing it." - John Stuart Mill, English utilitarian philosopher

"The best teacher is the one who suggests rather than dogmatizes, and inpires his listener with the wish to teach himself." - Edward Bulwer-Lytton

"There is a history in all men's lives." - William Shakespeare

"You have to know the past to understand the present." - Carl Sagan

"Change is not merely necessary to life, it is life." - Alvin Toffler

"We must become the change we want to see." - Gandhi 

"Every major horror of history was committed in the name of an altruistic motive." - Ayn Rand

"A generation which ignores history has no past and no future."  -  Robert Heinlein

"Liberty, too, must be limited in order to be possessed." - Edmund Burke, British author, philosopher, and political theorist

"If tyranny and oppression come to this land, it will be in the guise of fighting a foreign enemy." - John Adams, 2nd President of the United States

"Those who can make you believe absurdities, will make you commit atrocities." - Voltaire, French Enlightenment philosopher

"A historian is a prophet in reverse." - Fredrich Schlegel, German philosopher

"Human history becomes more and more a race between education and catastrophe." - H.G. Wells, in The Outline of History (1920)

"To stand in silence when they should be protesting makes cowards out of men." - Abraham Lincoln

"A great many people think they are thinking when they are merely rearranging their prejudices." - William James

"Patriotism is your conviction that this country is superior to all others because you were born in it." - George Bernard Shaw, Irish playwright

"The true spirit of conversation consists in building on another man's observation, not overturning it." - Edward Bulwer-Lytton

"The charm of history and its enigmatic lesson consist in the fact that, from age to age, nothing changes and yet everything is completely different." - Aldous Huxley