And there we all were, as invisible as you could wish to see.

Sometimes fairy stories may say best what's to be said.

We have lost the invaluable faculty of being shocked a faculty which has hitherto almost distinguished the Man or Woman from the beast or child.

Only the skilled can judge the skillfulness, but that is not the same as judging the value of the result.

How incessant and great are the ills with which a prolonged old age is replete.

What I like about experience is that it is such an honest thing. You may take any number of wrong turnings; but keep your eyes open and you will not be allowed to go very far before the warning signs appear. You may have deceived yourself, but experience is not trying to deceive you. The universe rings true wherever you fairly test it.

No doubt those who really founded modern science were usually those whose love of truth exceeded their love of power.