The best Quotations

Do you know the writers of the following quotations?

Quotation The proper study of mankind is woman. - writer
Quotation The scripture in times of disputes is like an open town in times of war, which serves in differently the occasions of both parties. - writer
Quotation Any important disease whose causality is murky, and for which treatment is ineffectual, tends to be awash in significance. - writer
Quotation Your life changes the moment you make a new, congruent, and committed decision. - writer
Quotation To be prepared for war is one of the most effective means of preserving peace. - writer
Quotation The people recognize themselves in their commodities; they find their soul in their automobile, hi-fi set, split-level home, kitchen equipment. - writer