"Wise people are in want of nothing, and yet need many things." —Chrysippus

"Be indifferent to what makes no difference." —Marcus Aurelius

"In anger we should refrain both from speech and action." —Pythagoras

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

"Nothing exists except atoms and free space, everything else is opinion." —Democritus

"Love is a serious mental disease." —Plato, Phaedrus

"All that exists is the seed of what will emerge from it." —Marcus Aurelius

"Think of yourself as dead. You have lived your life. Now take what’s left and live it properly." —Marcus Aurelius

"In anger we should refrain both from speech and action." —Pythagoras

"How does it help…to make troubles heavier by bemoaning them?" —Seneca

"Nothing is needed by fools, for they do not understand how to use anything, but are in want of everything." —Marcus Aurelius

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

"You have power over your mind - not outside events. Realise this, and you will find strength." —Marcus Aurelius

"No man is more unhappy than he who never faces adversity. For he is not permitted to prove himself." —Seneca

"First learn the meaning of what you say, and then speak." —Epictetus

"If you are distressed by anything external, the pain is not due to the thing itself, but to your estimate of it; and this, you have the power to revoke at any moment." —Marcus Aurelius

"Before a crowd, the ignorant are more persuasive than the educated." —Aristotle

"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

"From this instant on, vow to stop disappointing yourself, separate yourself from the mob. Decide to be extraordinary and do what you need to do—now." —Epictetus

"No man can have a peaceful life who thinks too much about lengthening it." —Seneca