All great things are simple, and many can be expressed in single words: freedom, justice, honor, duty, mercy, hope.
Do something every day that you don't want to do; this is the golden rule for acquiring the habit of doing your duty without pain.
What Heaven has conferred is called The Nature; an accordance with this nature is called The Path of duty; the regulation of this path is called Instruction. The path may not be left for an instant. If it could be left, it would not be the path.