“A rational man never distorts or corrupts his own standards and judgment in order to appeal to the irrationality, stupidity, or dishonesty of others.”

“For the Stoics, then, our judgments about the world are all that we can control, but also all that we need to control in order to be happy; tranquility results from replacing our irrational judgments with rational ones”

“The source of man's rights is not divine law or a congressional law, but the law of identity. A is A ___ and man is man. Rights are conditions of existence required by man's nature for his proper survival. If man is to live on earth, it is right for him to use his mind, it is right to act on his own free judgment, it is right to work for his values and to keep the product for his work. If life on earth is his purpose, he has a right to live as a rational being: nature forbids him the irrational”

“The belief in a god is irrational, and once this leap of faith is made it only takes short steps to abandon the standards of rationality and lose the ability to distinguish truth from falsehoods.”

“There are only a few natural forces in this world that can make a rational man go against his judgment: love and greed.”

“Action is the activity of the rational soul, which abhors irrationality and must combat it or be corrupted by it. When it sees the irrationality of others, it must seek to correct it, and can do this either by teaching or engaging in public affairs itself, correcting through its practice. And the purpose of action is to enable philosophy to continue, for if men are reduced to the material alone, they become no more than beasts.”