What right have I to grieve, who have not ceased to wonder?

I have myself to respect, but to myself I am not amiable; but my friend is my amiableness personified.

Insane!... Ask the tyrant who is his most dangerous foe, the sane man or the insane?

Most of the luxuries and many of the so-called comforts of life are not only not indispensable but positive hindrances to our progress. Our life is frittered away by detail. I say let your affairs be as two or three, not a hundred or a thousand. And keep your accounts on your thumb nail.

The Heavens are as deep as our aspirations are high.

We can never have enough of Nature.

I have never found a companion that was so companionable as solitude. We are for the most part more lonely when we go abroad among men than when we stay in our chambers. A man thinking or working is always alone, let him be where he will.