In going about, you are careful not to step upon a nail or to twist your foot. Care thus also lest you injure your ruling faculty. And if we observe this in each thing we do, we shall the more safely undertake it.
When walking, you take care not to step on a nail or twist your ankle. Take the same care not to harm your ability to reason and judge. If we keep this in mind in everything we do, we will act more safely.