If you're familiar with a principle you don't have to be familiar with all of its applications.

Each new year is a surprise to us. We find that we had virtually forgotten the note of each bird, and when we hear it again, it is remembered like a dream, reminding us of a previous state of existence. How happens it that the associations it awakens are always pleasing, never saddening, reminiscences of our sanest hours. The voice of nature is always encouraging.

I live in the angle of a leaden wall, into whose composition was poured a little alloy of bell-metal. Often, in the repose of my mid-day, there reaches my ears a confused tintinnabulum from without. It is the noise of my contemporaries.

Man's moral nature is a riddle which only eternity can solve.

The eye may see for the hand, but not for the mind.

As for fowling, during the last years that I carried a gun my excuse was that I was studying ornithology, and sought only new or rare birds. But I confess that I am now inclined to think that there is a finer way of studying ornithology than this. It requires so much closer attention to the habits of the birds, that, if for that reason only, I have been willing to omit the gun.

I do not speak to those who are well employed, in whatever circumstances, and they know whether they are well employed or not; but mainly to the mass of men who are discontented, and idly complaining of the hardness of their lot or of the times, when they might improve them.