"Ask yourself at every moment, is this necessary?" —Marcus Aurelius

"If someone succeeds in provoking you, realize that your mind is complicit in the provocation." —Epictetus

"Love is born into every human being; it calls back the halves of our original nature together; it tries to make one out of two and heal the wound of human nature." —Plato, The Symposium

"He who sweats more in training bleeds less in war." —Greek Proverb

"No man ever steps in the same river twice, for it’s not the same river and he’s not the same man." —Heraclitus

"People who labor all their lives but have no purpose to direct every thought and impulse toward are wasting their time-even when hard at work." —Marcus Aurelius

"If you don’t have consistent goal in life, you can’t live it in a consistent way." —Marcus Aurelius

"The measure of a man is what he does with power." —Plato

"Courage is knowing what not to fear." —Plato

"Deaths that are greater, greater portions gain." —Heraclitus

"The goal of life is living in agreement with Nature." —Zeno

"Knowing yourself is the beginning of all wisdom." —Aristotle

"Rule your mind or it will rule you." —Horace

"Just that you do the right thing. The rest doesn’t matter." —Marcus Aurelius

"The fool’s life is empty of gratitude and full of fears; its course lies wholly toward the future." —Epicurus

"Ask yourself at every moment, is this necessary?" —Marcus Aurelius

"Having the fewest wants, I am nearest to the gods." —Socrates

"Think your way through difficulties: harsh conditions can be softened, restricted ones can be widened, and heavy ones can weigh less on those who know how to bear them." —Seneca

"People are frugal in guarding their personal property; but as soon as it comes to squandering time they are most wasteful of the one thing in which it is right to be stingy." —Seneca

"Men seek out retreats for themselves in the country, by the seaside, on the mountains… nowhere can a man find a retreat more peaceful or more free from trouble than his own soul." —Marcus Aurelius

"As long as you live, keep learning how to live." —Seneca

"Those whom true love has held, it will go on holding." —Seneca

"I do not know whether I shall make progress; but I should prefer to lack success rather than to lack faith." —Seneca

"Let your speech be better than silence, or be silent." —Dionysius

"The problem creates the solution. What stands in the way becomes the way." —Marcus Aurelius

"So it is with men too: even if they don’t want to, they will be compelled to follow what is destined." —Zeno

"Dogs and philosophers do the greatest good and get the fewest rewards." —Diogenes

"Your days are numbered. Use them to throw open the windows of your soul to the sun. If you do not, the sun will soon set, and you with it." —Marcus Aurelius

"There could be no justice, unless there were also injustice; no courage, unless there were cowardice; no truth, unless there were falsehood." —Chrysippus

"You become what you give your attention to." —Epictetus

"You are well aware that it is not numbers or strength that bring the victories in war. No, it is when one side goes against the enemy with the gods’ gift of a stronger morale that their adversaries, as a rule, cannot withstand them. I have noticed this point too, my friends, that in soldiering the people whose one aim is to keep alive usually find a wretched and dishonorable death, while the people who, realizing that death is the common lot of all men, make it their endeavour to die with honour, somehow seem more often to reach old age and to have a happier life when they are alive. These are facts which you too should realize (our situation demands it) and should show that you yourselves are brave men and should call on the rest to do likewise." —Xenophon, The Persian Expedition

"Do not train a child to learn by force or harshness; but direct them to it by what amuses their minds, so that you may be better able to discover with accuracy the peculiar bent of the genius of each." —Plato

"I do not know whether I shall make progress; but I should prefer to lack success rather than to lack faith." —Seneca

"Wisdom outweighs any wealth." —Sophocles

"Ask yourself at every moment, is this necessary?" —Marcus Aurelius

"The mind that is anxious about future events is miserable." —Seneca

"The fates lead the willing but drag the unwilling." —Cleanthes

"Nothing is more active than thought, for it travels over the universe, and nothing is stronger than necessity for all must submit to it." —Thales

"Wait for that wisest of all counselors: time." —Pericles