Indeed neither life nor science bothers about "essences"-they leave "essences" to metaphysics, which is neither life nor science.

An individual cannot be considered entirely sane of he is wholly ignorant of scientific method and structure of nature and so retains primitive semantic reactions.

An individual cannot be considered entirely sane if he is wholly ignorant of scientific method and structure of nature and so retains primitive semantic reactions.

If a psychiatric and scientific inquiry were to be made upon our rulers, mankind would be appalled at the disclosures.