Section IX

Why visual objects of great dimensions are sublime¹.

Vision is performed by having a picture, formed by the rays of light which are reflected from the object, painted in one piece, instantaneously, on the retina, or last nervous part of the eye. Or, according to others, there is but one point of any object painted on the eye in such a manner as to be perceived at once, but by moving the eye, we gather up, with great celerity, the several parts of the object, so as to form one uniform piece. If the former opinion be allowed, it will be considered,26 that though all the light reflected from a large body should strike the eye in one instant; yet we must suppose that the body itself is formed of a vast number of distinct points, every one of which, or the ray from every one, makes an impression on the retina. So that, though the image of one point should cause but a small tension of this membrane², another, and another, and another stroke, must in their progress cause a very great one, until it arrives at last to the highest degree; and the whole capacity of the eye, vibrating in all its parts, must approach near to the nature of what causes pain, and consequently must produce an idea of the sublime. Again, if we take it, that one point only of an object is distinguishable at once; the matter will amount nearly to the same thing, or rather it will make the origin of the sublime from greatness of dimension yet clearer. For if but one point is observed at once, the eye must traverse the vast space of such bodies with great quickness, and consequently the fine nerves and muscles destined³ to the motion of that part must be very much strained; and their great sensibility must make them highly affected⁴ by this straining. Besides, it signifies just nothing to the effect produced, whether a body has its parts connected and makes its impression at once; or, making but one impression of a point at a time, it causes a succession of the same or others so quickly as to make them seem united; as is evident from the common effect of whirling about a lighted torch or piece of wood: which, if done with celerity, seems a circle of fire.

1 sublime   

adj.崇高的，伟大的；极度的，不顾后果的

参考例句：

• We should take some time to enjoy the sublime beauty of nature.我们应该花些时间去欣赏大自然的壮丽景象。
• Olympic games play as an important arena to exhibit the sublime idea.奥运会，就是展示此崇高理念的重要舞台。

2 membrane   

n.薄膜，膜皮，羊皮纸

参考例句：

• A vibrating membrane in the ear helps to convey sounds to the brain.耳膜的振动帮助声音传送到大脑。
• A plastic membrane serves as selective diffusion barrier.一层塑料薄膜起着选择性渗透屏障的作用。

3 destined   

adj.命中注定的；(for)以…为目的地的

参考例句：

• It was destined that they would marry.他们结婚是缘分。
• The shipment is destined for America.这批货物将运往美国。

4 affected   

adj.不自然的，假装的

参考例句：

• She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
• His manners are affected.他的态度不自然。