But the whole vital process of the earth takes place so gradually and in periods of time which are so immense compared with the length of our life, that these changes are not observed, and before their course can be recorded from beginning to end whole nations perish and are destroyed.

That which is common to the greatest number has the least care bestowed upon it

The energy or active exercise of the mind constitutes life.

All that we do is done with an eye to something else.

In most constitutional states the citizens rule and are ruled by turns, for the idea of a constitutional state implies that the natures of the citizens are equal, and do not differ at all.

If the hammer and the shuttle could move themselves, slavery would be unnecessary.

We are the sum of our actions, and therefore our habits make all the difference.