The great man presides over all his states of consciousness with obstinate rigor.

• focus

He who truly knows has no occasion to shout.

• bragging
• calm

Just as iron rusts from disuse, even so does inaction spoil the intellect.

• laziness

Every now and then, go away, take a little relaxation, because when you come back to your work, your judgment will be surer. To remain constantly at work will cause you to lose power of judgment. Go some distance away, because then the work appears smaller and more of it can be taken in at a glance, and a lack of harmony or proportion is more readily seen.

• work
• leisure
• rest

Simplicity is the ultimate sophistication.

• simplicity

Reprove a friend in secret, but praise him before others.

• criticism
• praise