High - protein foods are very important for gaining muscle, but carbohydrates and fats are also necessary sources of energy. (healthline.com)
We must take an approach to immigration which is not only fair, but understand that it is a rich and necessary source of human capital. (alexburton.ca)
exhibit interest in the social and discursive processes of «demarcation» by which orthodoxies define, and thereby in some sense create, heresies — not only as the inevitable cartographic by - products of the impulse to draw boundaries and create centers, but also (paradoxically, and in multiple ways) as necessary sources of «nourishment» for orthodoxies themselves. (religion-online.org)