"Progress has not followed a straight ascending line, but a spiral with rhythms of progress and retrogression, of evolution and dissolution."

"A really great talent finds its happiness in execution."

"Personality is everything in art and poetry."

"Life belongs to the living, and he who lives must be prepared for changes."

"Many people take no care of their money till they come nearly to the end of it, and others do just the same with their time."

"We must not take the faults of our youth with us into old age, for age brings along its own defects."

"Rejoice that you have still have a long time to live, before the thought comes to you that there is nothing more in the world to see."

"They teach in academies far too many things, and far too much that is useless."

"Enjoy what you can, endure what you must"

"What is not started today is never finished tomorrow."

"Then indecision brings its own delays,And days are lost lamenting o'er lost days.Are you in earnest? Seize this very minute;What you can do, or dream you can, begin it;Boldness has genius, power and magic in it."

"Doubt grows with knowledge."

"There is no crime of which I do not deem myself capable."

"Those who know nothing of foreign languages know nothing of their own."

"Wealth lost is something lost, honor lost is something lost: Courage lost all is lost."

"He who moves not forward, goes backward"

"Courage and modesty are the most unequivocal of virtues, for they are of a kind that hypocrisy cannot imitate; they too have this quality in common, that they are expressed by the same color."

"The coward threatens when he is safe"

"The person of analytic or critical intellect finds something ridiculous in everything. The person of synthetic or constructive intellect, in almost nothing."

"Strike the dog dead, it's but a critic!"

"A creation of importance can only be produced when its author isolates himself, it is a child of solitude."

"Excellence is rarely found, more rarely valued."

"Rest not. Life is sweeping by; go and dare before you die. Something mighty and sublime, leave behind to conquer time."

"In comradeship is danger countered best."

"Napoleon affords us an example of the danger of elevating one's self to the absolute, and sacrificing everything to the carrying out of an idea."

"To be loved for what one is, is the greatest exception. The great majority love in others only what they lend him, their own selves, their version of him."

"I love those who yearn for the impossible."

"We are shaped and fashioned by what we love."

"Love is an ideal thing, marriage a real thing; a confusion of the real with the ideal never goes unpunished."

"That is the true season of love; when we believe that we alone can love, that no one could ever have loved as much before, and that no one will ever love in the same way again."

"The first and last thing required of genius is the love of truth."

"To create something you must be something."

"No prudent antagonist thinks light of his adversaries."

"Our friends show us what we can do; our enemies teach us what we must do."

"All the knowledge I possess everyone else can acquire, but my heart is all my own."

"Correction does much, but encouragement does more. Encouragement after censure is as the sun after a shower."

"Confronted by outstanding merit, there is no way of saving one's ego except by love"

"Hatred is active, and envy passive dislike; there is but one step from envy to hate."

"Men are so constituted that every one undertakes what he sees another successful in, whether he has aptitude for it or not."

"The soul is indestructible and its activity will continue through eternity."

"Every situation, every moment -- is of infinite worth; for it is the representative of a whole eternity."

"Those are dead even for this life who hope for no other."

"The hero draws inspiration from the virtue of his ancestors."

"I've studied now Philosophy and Jurisprudence, Medicine - and even, alas! Theology - from end to end with labor keen; and here, poor fool with all my lore I stand, no wiser than before."

"To the person with a firm purpose all men and things are servants."

"A purpose you impart is no longer your own."

"Every person above the ordinary has a certain mission that they are called to fulfill."

"Be above it! Make the world serve your purpose, but do not serve it."

"If you want a wise answer, ask a reasonable question."

"Everything has been thought of before, but the problem is to think of it again."