"Science does not know its debt to imagination."

"Nothing external to you has any power over you."

"Though we travel the world over to find the beautiful, we must carry it with us or we find it not."

"Do not go where the path may lead, go instead where there is no path and leave a trail."

"We are born believing. A man bears beliefs as a tree bears apples."

"Nothing great was ever achieved without enthusiasm."

"Our admiration of the antique is not admiration of the old, but of the natural."

"Words are also actions, and actions are a kind of words."

"For every minute you remain angry, you give up sixty seconds of peace of mind."

"Fine manners need the support of fine manners in others."

"Our greatest glory is not in never failing, but in rising up every time we fail."

"As we grow old, the beauty steals inward."

"God screens us evermore from premature ideas."

"Little minds have little worries, big minds have no time for worries."

"Adopt the pace of nature: her secret is patience."

"Knowledge is knowing that we cannot know."

"An ounce of action is worth a ton of theory."

"With the past, I have nothing to do; nor with the future. I live now."

"A great part of courage is the courage of having done the thing before."

"Men are what their mothers made them."

"We are a puny and fickle folk. Avarice, hesitation, and following are our diseases."

"There is no chance and anarchy in the universe. All is system and gradation. Every god is there sitting in his sphere."

"Genius always finds itself a century too early."

"It is a fact often observed, that men have written good verses under the inspiration of passion, who cannot write well under other circumstances."

"Every experiment, by multitudes or by individuals, that has a sensual and selfish aim, will fail."

"Doing well is the result of doing good. That's what capitalism is all about."

"The secret of ugliness consists not in irregularity, but in being uninteresting."

"Society is always taken by surprise at any new example of common sense."

"Great men or men of great gifts you shall easily find, but symmetrical men never."

"We acquire the strength we have overcome."

"The revelation of thought takes men out of servitude into freedom."

"If a man can... make a better mousetrap, the world will make a beaten path to his door."

"The search after the great men is the dream of youth, and the most serious occupation of manhood."

"Wisdom has its root in goodness, not goodness its root in wisdom."

"The martyr cannot be dishonored. Every lash inflicted is a tongue of fame; every prison a more illustrious abode."

"Every man I meet is in some way my superior."

"Enthusiasm is the mother of effort, and without it nothing great was ever achieved."

"What lies behind you and what lies in front of you, pales in comparison to what lies inside of you."

"Peace cannot be achieved through violence, it can only be attained through understanding."

"God enters by a private door into every individual."

"If the tongue had not been framed for articulation, man would still be a beast in the forest."

"One must be an inventor to read well. There is then creative reading as well as creative writing."

"The only way to have a friend is to be one."

"A man in debt is so far a slave."

"A man is what he thinks about all day long."

"It is not length of life, but depth of life."

"You cannot do a kindness too soon, for you never know how soon it will be too late."

"As a cure for worrying, work is better than whiskey."

"There is creative reading as well as creative writing."

"Bad times have a scientific value. These are occasions a good learner would not miss."