Do not reveal what you have thought upon doing, but by wise council keep it secret being determined to carry it into execution.
Those who know, do. Those that understand, teach.
The ethos of redemption is realized in self-mastery, by means of temperance, that is, continence of desires.
The best revenge is to be unlike him who performed the injury.
Jealousy is the tribute mediocrity pays to genius.
Good means not merely not to do wrong, but rather not to desire to do wrong.
Medicine heals diseases of the body, wisdom frees the soul from passions.
Loneliness adds beauty to life. It puts a special burn on sunsets and makes night air smell better.
I mistrust the judgement of every man in a case in which his own wishes are concerned.
Your reputation is in the hands of others. That's what the reputation is. You can't control that. The only thing you can control is your character.
Happiness is not an ideal of reason, but of imagination.
If you don't want to slip up tomorrow, speak the truth today.
Your visions will become clear only when you can look into your own heart. Who looks outside, dreams; who looks inside, awakes.
The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.
I don't like definitions, but if there is a definition of freedom, it would be when you have control over your reality to transform it, to change it, rather than having it imposed upon you. You can't really ask for more than that.
An understanding of the natural world is a source of not only great curiosity, but great fulfilment.
Half the world is composed of people who have something to say and can't, and the other half who have nothing to say and keep on saying it.
Science has not yet taught us if madness is or is not the sublimity of the intelligence.
A man is literally what he thinks.
An intelligent hell would be better than a stupid paradise.
Immoderate desire is the mark of a child, not a man.