The shallow, as intimated, consider liberty a release from all law, from every constraint. The wise see in it, on the contrary, the potent Law of Laws.
If you will not fight for right when you can easily win without bloodshed; if you will not fight when your victory will be sure and not too costly; you may come to the moment when you will have to fight with all odds against you and only a precarious chance of survival. There may be even a worse fate, you may have to fight when there is no hope of victory, because it is better to perish than to live as slaves.
No, you can't deny women their basic rights and pretend it's about your 'religious freedom'. If you don't like birth control, don't use it. Religious freedom doesn't mean you can force others to live by your own beliefs.
Only free peoples can hold their purpose and their honor steady to a common end, and prefer the interests of mankind to any narrow interest of their own.
A central lesson of science is that to understand complex issues (or even simple ones), we must try to free our minds of dogma and to guarantee the freedom to publish, to contradict, and to experiment. Arguments from authority are unacceptable.