Science (科学)
马克思：在科学的入口处，正像在地狱的入口处一样，必须根绝一切犹豫，任何怯懦都无济于事。
爱因斯坦: 提出一个问题往往比解决一个问题更重要，因为解决问题也许仅是一个数学上或实验上的技能而已。而提出新的问题、新的可能性，从新的角度去看旧的问题，都需要有创造性的想象力，而且标志着科学的真正进步。
笛卡尔: 越学习，越发现自己的无知。
Arthur C. Clarke: If an elderly but distinguished scientist says that something is possible he is almost certainly right, but if he says that it is impossible he is very probably wrong.
Confucius: Learning without thought is labor lost; thought without learning is perilous.(孔子：学而不思则惘，思而不学则殆).
Richard Feynman (1918 – 1988): Philosophers say a great deal about what is absolutely necessary for science, and it is always, so far as one can see, rather naive, and probably wrong.
伦琴：我喜欢离开人们通行的小路，而走荆棘丛生的崎岖山路。
卢瑟福(E. Rutherford)：我认为再没有比那些只顾自己鼻子尖底下一点事情的人更可悲的了。
契诃夫：对自己不满是任何真正有才能的人的根本特征之一。
席勒：儿童游戏中常寓有深刻的思想。
Sir Francis Darwin (1848 – 1925): In science the credit goes to the man who convinces the world, not the man to whom the idea first occurs.