Health is the soul that animates all the enjoyments of life, which fade and are tasteless without it.

The truths of religion are never so well understood as by those who have lost the power of reason.

A constellation is not an entity at all, not the kind of thing that Uranus, or anything else, can sensibly be said to 'move into.'

When you have shot one bird flying you have shot all birds flying. They are all different and they fly in different ways but the sensation is the same and the last one is as good as the first.

It is one thing to show a man that he is in an error, and another to put him in possession of the truth.