The life of theoretical philosophy is the best and happiest a man can lead. Few men are capable of it and then only intermittently. For the rest there is a second-best way of life, that of moral virtue and practical wisdom.

Now that practical skills have developed enough to provide adequately for material needs, one of these sciences which are not devoted to utilitarian ends [mathematics] has been able to arise in Egypt, the priestly caste there having the leisure necessary for disinterested research.

Anything whose presence or absence makes no discernible difference is no essential part of the whole.

We work to earn our leisure.

Love is the cause of unity in all things.

That which is in locomotion must arrive at the half-way stage before it arrives at the goal.

At the intersection where your gifts, talents, and abilities meet a human need; therein you will discover your purpose