For centuries, the battle of morality was fought between those who claimed that your life belongs to God and those who claimed that it belongs to your neighbors - between those who preached that the good is self-sacrifice for the sake of ghosts in heaven and those who preached that the good is self-sacrifice for the sake of incompetents on earth. And no one came to say that your life belongs to you and that the good is to live it.
Ayn RandIn western civilization, the period ruled by mysticism is known as the 'Dark Ages' and the 'Middle Ages'. I will assume that you know the nature of that period and the state of human existence in those ages. The Renaissance broke the rules of the mystics. "Renaissance" means the "rebirth". Few people today will care to remind you that it was a rebirth of reason - of man's mind.
Ayn RandA chronic lack of pleasure, of any enjoyable, rewarding or stimulating experiences, produces a slow, gradual, day-by-day erosion of man's emotional vitality, which he may ignore or repress, but which is recorded by the relentless computer of his subconscious mechanism that registers an ebbing flow, then a trickle, then a few last drops of fuel--until the day when his inner motor stops and he wonders desperately why he has no desire to go on, unable to find any definable cause of his hopeless, chronic sense of exhaustion.
Ayn Rand