If thinking is like perceiving, it must be either a process in which the soul is acted upon by what is capable of being thought, or a process different from but analogous to that. The thinking part of the soul must therefore be, while impassable, capable of receiving the form of an object; that is, must be potentially identical in character with its object without being the object. Mind must be related to what is thinkable, as sense is to what is sensible.
Happiness, whether consisting in pleasure or virtue, or both, is more often found with those who are highly cultivated in their minds and in their character, and have only a moderate share of external goods, than among those who possess external goods to a useless extent but are deficient in higher qualities.
Good moral character is not something that we can achieve on our own. We need a culture that supports the conditions under which self-love and friendship flourish.
Our virtues are voluntary (and in fact we are in a sense ourselves partly the cause of our moral dispositions, and it is our having a certain character that makes us set up an end of a certain kind), it follows that our vices are voluntary also; they are voluntary in the same manner as our virtues.
Up to here, in general, we have mainly stuffed the brain of the young people with a indigestible multitude of varios notions, without thinking about enough of the prime necessity to form their character.
Reason must approach nature with the view, indeed, of receiving information from it, not, however, in the character of a pupil, who listens to all that his master chooses to tell him, but in that of a judge, who compels the witnesses to reply to those questions which he himself thinks fit to propose. To this single idea must the revolution be ascribed, by which, after groping in the dark for so many centuries, natural science was at length conducted into the path of certain progress.
One trait in the philosopher's character we can assume is his love of the knowledge that reveals eternal reality, the realm unaffected by change and decay. He is in love with the whole of that reality, and will not willingly be deprived even of the most insignificant fragment of it - just like the lovers and men of ambition we described earlier on.
Unconsciously we seek the principles and opinions which are suited to our temperament, so that at last it seems as if these principles and opinions had formed our character and given it support and stability.
He had a sense of his dignity, which was of the most exquisite nature. He could detect a design upon it when nobody else had any perception of the fact. His life was made an agony by the number of fine scalpels that he felt to be incessantly engaged in dissecting his dignity.
The more a man is successful in getting out (or coming out) from his own individuality, of his egoist self, and to control (or dominate) the instincts of his physical nature, the more his character, by rising above material contingencies, widen, become free and independent.