Anyone in a free society where the laws are unjust has an obligation to break the law.

As yesterday and the historical ages are past, as the work of today is present, so some flitting perspectives and demi-experiencesof the life that is in nature are in time veritably future, or rather outside of time, perennial, young, divine, in the wind and rain which never die.

If we knew all the laws of Nature, we should need only fact, or the description of one actual phenomenon, to infer all the particular results at that point.

Let us spend one day as deliberately as Nature.

Let us consider under what disadvantages Science has hitherto labored before we pronounce thus confidently on her progress.

It has been so written, for the most part, that the times it describes are with remarkable propriety called dark ages. They are dark, as one has observed, because we are so in the dark about them.

The language of friendship is not words but meanings.