It is possible to be solitary in one's mind while living in a crowd, and it is possible for one who is solitary to live in the crowd of his own thoughts.

Do good when you remember, and what you forget will be revealed to you; and do not surrender your mind to blind forgetfulness.

It is written, 'Be wise as serpents and innocent as doves' (Mt. 10:16). Being like serpents means not ignoring the attacks and wiles of the devil. Like is quickly shown to like. The simplicity of the dove denotes purity of action.

It is possible to be solitary in one's mind while living in a crowd, and it is possible for one who is solitary to live in the crowd of his own thoughts.

In the same way that a powerful medicine cures an illness, so illness itself is a medicine to cure passion. And there is much profit of soul in bearing illness quietly and giving thanks to God.