In art, truth is a means to an end; in science, it is the only end.
Those who have obtained the farthest insight into Nature have been, in all ages, firm believers in God.
Every failure is a step to success.
We cannot observe external things without some degree of Thought; nor can we reflect upon our Thoughts, without being influenced in the course of our reflection by the Things which we have observed.
There is a mask of theory over the whole face of nature.
The catastrophist constructs theories, the uniformitarian demolishes them.