Pinchot - Principles of conservation
conservation means greatest good to greatest number for longest time
advocates the use of foresight, prudence, thrift, and intelligence in dealing with public matter. Right and duty of people to act for benefit of people. Demands application of common sense to common problems for common good.
Prevention of waste
first duty of human race is to control earth it lives upon. Understanding that humans can prevent forest fires before having to stop them. We can stop natural waste resource leakage.
Natural resources must be developed and preserved
public action for public benefit has much wider field to cover and larger part to play than when there were resources enough for everyone.
Development
the use of natural resources now existing on this continent for the benefit of people who live here now. May be same amount of waste In neglecting development and use of natural resources in their destruction.