What a new face courage puts on everything!

But if a man would be alone, let him look at the stars. The rays that come from those heavenly worlds, will separate between him and vulgar things.

We must hold a man amenable to reason for the choice of his daily craft or profession. It is not an excuse any longer for his deeds that they are the custom of his trade. What business has he with an evil trade?

Fate, then, is a name for facts not yet passed under the fire of thought; for causes which are unpenetrated.

Whenever a true theory appears, it will be its own evidence. Its test is, that it will explain all phenomena.

Difficulties exist to be surmounted.

As much wisdom may be expended on a private economy as on an empire, and as much wisdom may be drawn from it.