The Things which hurt, instruct.

Is there anything men take more pains about than to render themselves unhappy?

Whoever feels pain in hearing a good character of his neighbor, will feel a pleasure in the reverse. And those who despair to rise in distinction by their virtues, are happy if others can be depressed to a level of themselves.

Pain wastes the Body, Pleasures the Understanding.

Men take more pains to mask than mend.