[The] great fairy Science, who is likely to be queen of all the fairies for many a year to come, can only do you good, and never do you harm.

Music is a sacred, a divine, a God-like thing, and was given to man by Christ to lift our hearts up to God, and make us feel something of the glory and beauty of God, and of all which God has made.

Have thy tools ready. God will find thee work.

There's no use doing a kindness if you do it a day too late.

[At the end of the story, its main character, Tom] is now a great man of science, and can plan railroads, and steam-engines, and electric telegraphs, and rifled guns, and so forth; and knows everything about everything, except why a hen's egg don't turn into a crocodile, and two or three other little things that no one will know till the coming of the Cocqcigrues.

Love is sentimental measles.

You must not say that this cannot be, or that that is contrary to nature. You do not know what Nature is, or what she can do; and nobody knows; not even Sir Roderick Murchison, or Professor Huxley, or Mr. Darwin, or Professor Faraday, or Mr. Grove, or any other of the great men whom good boys are taught to respect. They are very wise men; and you must listen respectfully to all they say: but even if they should say, which I am sure they never would, 'That cannot exist. That is contrary to nature,' you must wait a little, and see; for perhaps even they may be wrong.