Some circumstantial evidence is very strong, as when you find a trout in the milk. - Henry David Thoreau

Objects are concealed from our view, not so much because they are out of the course of our visual ray as because we do not bring our minds and eyes to bear on them, for there is no power to see in the eye itself, any more than in any other jelly.

The memory of some past moments is more persuasive than the experience of present ones.

I thrive best on solitude. If I have had a companion only one day in a week, unless it were one or two I could name, I find that the value of the week to me has been seriously affected. It dissipates my days, and often it takes me another week to get over it.