The two operations of our understanding, intuition and deduction, on which alone we have said we must rely in the acquisition of knowledge.

If we possessed a thorough knowledge of all the parts of the seed of any animal (e.g. man), we could from that alone, be reasons entirely mathematical and certain, deduce the whole conformation and figure of each of its members, and, conversely if we

When it is not in our power to follow what is true, we ought to follow what is most probable.

An optimist may see a light where there is none, but why must the pessimist always run to blow it out?

A state is better governed which has few laws, and those laws strictly observed.

Each problem that I solved became a rule, which served afterwards to solve other problems.