Nature surpasses nurture. – Proverb

Thats the nature of women, not to love when we love them, and to love when we love them not. – Miguel de Cervantes

The insufferable arrogance of human beings to think that Nature was made solely for their benefit, as if it was conceivable that the sun had been set afire merely to ripen mens apples and head their cabbages. – Cyrano de Bergerac

Human nature is above all things lazy. – Harriet Beecher Stowe