Duty--the command of heaven, the eldest voice of God.

All the butterflies and cockyolybirds would fly past me.

If you wish to be like a little child, study what a little child could understand — nature; and do what a little child could do — love.

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.

Feelings are like chemicals, the more you analyze them the worse they smell.

The men whom I have seen succeed best in life always have been cheerful and hopeful men; who went about their business with a smile on their faces; and took the changes and chances of this mortal life like men; facing rough and smooth alike as it came.

Did not learned men, too, hold, till within the last twenty-five years, that a flying dragon was an impossible monster? And do we not now know that there are hundreds of them found fossil up and down the world? People call them Pterodactyles: but that is only because they are ashamed to call them flying dragons, after denying so long that flying dragons could exist.