Contrariwise, if it was so, it might be; and if it were so, it would be; but as it isn't, it ain't. That's logic.

Contrariwise,' continued Tweedledee, 'if it was so, it might be; and if it were so, it would be; but as it isn't, it ain't. That's logic.

There are three hundred and sixty-four days when you might get un-birthday presents, and only one for birthday presents, you know.

It is the logic of our times,
No subject for immortal verse-
That we who lived by honest dreams
Defend the bad against the worse.

The heart never takes the place of the head: but it can, and should, obey it.

Courtesy while you're thinking what to say. It saves time.