The mind in itself wants nothing, unless it creates a want for itself; therefore it is both free from perturbation and unimpeded, if it does not perturb and impede itself.

Failing to understand the workings of one's own mind is bound to lead to unhappiness.

Enter others' minds and let them enter yours.

It is a base thing for the countenance to be obedient and to regulate and compose itself as the mind commands, and for the mind not to be regulated and composed by itself.