How many things have been denied one day, only to become realities the next!

Whatever one man is capable of imagining, other men will prove themselves capable of realizing.

It may be taken for granted that, rash as the Americans are, when they are prudent there is good reason for it.

Why lower oneself to taking pride from being American or British, when you can boast of being man!

In the memory of the dead all chronological differences are effaced.

How tranquil is a coral tomb, and may the heavens grant that my companions and I be buried in no other!

[we see that] science is eminently perfectible, and that each theory has constantly to give way to a fresh one.