A man is not an animal. He cannot survive as an animal on instinct alone. He does not have the speed, strength or durability to survive in the manner of a cheetah, rhinoceros or camel. A man must use reason to survive – his survival depends upon the ability to select the most rational decision out of the myriad choices available to him at any moment. Every single action in some manner relates to survival.
Because his survival depends upon his ability to decide (freedom of thought) he must have the freedom to act upon those decisions (freedom of action) and, in the same manner, so the fruits of those decisions must belong to him (property rights). Man is not an island and operates best when in harmony with other men. With this understanding can be identified a need to meet and communicate with others on matters of survival (freedom of association and speech).
The degree of violation of any of these rights is proportional to the degree that survival is endangered.
A free society is not only morally correct – the human race cannot survive without freedom.