Nature has some perfections to show that she is the image of God, and some defects to show that she is only His image.

The married should not forget that to speak of love begets love.

Seeing too much to deny and too little to be sure, I am in a state to be pitied.

You see, if the height of the mercury [barometer] column is less on the top of a mountain than at the foot of it (as I have many reasons for believing, although everyone who has so far written about it is of the contrary opinion), it follows that the weight of the air must be the sole cause of the phenomenon, and not that abhorrence of a vacuum, since it is obvious that at the foot of the mountain there is more air to have weight than at the summit, and we cannot possibly say that the air at the foot of the mountain has a greater aversion to empty space than at the top.

Habit is a second nature, which destroys the first.

Man is so great that his greatness appears even in the consciousness of his misery. A tree does not know itself to be miserable. It is true that it is misery indeed to know one's self to be miserable; but then it is greatness also. In this way, all man's miseries go to prove his greatness. They are the miseries of a mighty potentate, of a dethroned monarch.

If there were only one religion, God would indeed be manifest.