The incentive to ambition is the love of power.

That which anyone has been long learning unwillingly, he unlearns with proportional eagerness and haste.

There is a heroism in crime as well as in virtue. Vice and infamy have their altars and their religion.

A thought must tell at once, or not at all.

What are the publications that succeed? Those that pretend to teach the public that the persons they have been accustomed unwittingly to look up to as the lights of the earth are no better than themselves.

[Science is] the desire to know causes.

Popularity is neither fame nor greatness.