人类的历史发展表明,最多样化的种族对我们现在所拥有的文明做出了贡献。
伟大不在于成为最好,而在于比昨天的自己更好。
非经典逻辑的研究不仅是一种学术练习,更是理解复杂系统的必要条件。
The most powerful thing you can be is yourself.
The interest of the behaviorist in man's doings is more than the interest of the spectator—he wants to control man's reactions as physical scientists want to control and manipulate other natural phenomena.