Psychology as the behaviorist views it is a purely objective experimental branch of natural science.
行为主义者眼中的心理学是自然科学的一个纯粹客观的实验分支。
The study of quantum gravity is essential for understanding the early universe.
The most important thing in science is not to stop questioning.
为自己的原则而战比实践这些原则要容易。
In the end, we will remember not the words of our enemies, but the silence of our friends.