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

"The Fates guide the person who accepts them and hinder the person who resists them." —Cleanthes

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

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

"Misfortune nobly born is good fortune." —Marcus Aurelius

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

"Six mistakes mankind keeps making century after century: Believing that personal gain is made by crushing others; Worrying about things that cannot be changed or corrected; Insisting that a thing is impossible because we cannot accomplish it; Refusing to set aside trivial preferences; Neglecting development and refinement of the mind; Attempting to compel others to believe and live as we do." —Cicero

"There is no easy way from the earth to the stars." —Seneca

"Better to do a little well than a great deal badly." —Socrates

"We are more often frightened than hurt; and we suffer more in imagination than in reality." —Seneca

"We have two ears and one mouth, so we should listen more than we say." —Zeno, Quoted By Diogenes Laërtius

"The only thing I know is that I know nothing." —Socrates

"Mortal as I am, I know that I am born for a day. But when I follow at my pleasure the serried multitude of the stars in their circular course, my feet no longer touch the earth." —Ptolemy

"We are more often frightened than hurt; and we suffer more in imagination than in reality." —Seneca

"It is greed to do all the talking but to not want to listen at all." —Democritus

"It is essential that we not respond impulsively… take a moment before reacting, and you will find it easier to maintain control." —Epictetus

"External things are not the problem. It’s your assessment of them, which you can erase right now." —Marcus Aurelius

"He suffers more than necessary, who suffers before it is necessary." —Marcus Aurelius

"Quality is not an act, it is a habit." —Aristotle

"Nothing, to my way of thinking, is a better proof of a well ordered mind than a man’s ability to stop just where he is and pass some time in his own company." —Seneca