All behavior is motivated by some form of drive reduction.
所有行为都是由某种形式的驱力减少所驱动的。
Problem solving is a search through a space of possible solutions.
A well-managed forest is a gift that keeps giving.
The greatest works of art are born from the deepest sorrows.
我对各种图片都感兴趣，不管它们是怎么做出来的。
Mining with integrity means leaving the land better than we found it.