If a man behave with cowardice on one occasion, a contrary conduct reinstates him in his character. But by what action can a woman, whose behaviour has once been dissolute, be able to assure us, that she has formed better resolutions, and has self-command enough to carry them into execution?
All men, it is allowed, are equally desirous of happiness; but few are successful in the pursuit
 David Hume, An Enquiry Concerning the Principles of Morals (1751). copy citation

Context

“A female has so many opportunities of secretly indulging these appetites, that nothing can give us security but her absolute modesty and reserve; and where a breach is once made, it can scarcely ever be fully repaired. If a man behave with cowardice on one occasion, a contrary conduct reinstates him in his character. But by what action can a woman, whose behaviour has once been dissolute, be able to assure us, that she has formed better resolutions, and has self-command enough to carry them into execution? All men, it is allowed, are equally desirous of happiness; but few are successful in the pursuit: One considerable cause is the want of strength of mind, which might enable them to resist the temptation of present ease or pleasure, and carry them forward in the search of more distant profit and enjoyment.” source