The highest manifestation of life consists in this: that a being governs its own actions.A thing which is always subject to the direction of another is somewhat of a dead thing.
Love takes up where knowledge leaves off.
To live without joy is the privilege of the just.
Sorrow can be alleviated by good sleep， a bath and a glass of wine.
The things that we love tell us what we are.
Fear is such a powerful emotion for humans that when we allow it to take us over， it drives compassion right out of our hearts.
The principle of human dignity is the foundation of all the other principles of the natural law.
Good can exist without evil， whereas evil cannot exist without good.
Law is nothing else than an ordinance of reason for the common good， made by him who has care of the community.
The study of truth requires a considerable effort - which is why few are willing to undertake it out of love of knowledge - despite the fact that God has implanted a natural appetite for such knowledge in the minds of men.
If the highest aim of a captain were to preserve his ship， he would keep it in port forever.
The things that we love tell us what we are.
Three things are necessary for the salvation of man: to know what he ought to believe； to know what he ought to desire； and to know what he ought to do.
To one who has faith， no explanation is necessary.To one without faith， no explanation is possible.
信仰与看不见的事物有关，希望与尚未到来的事物有关。
灵魂就像一个无人居住的世界，只有当上帝将头靠在我们身上时，它才会复苏。
幸福是通过美德获得的，是人自己意愿获得的善。
生命的最高体现在于：一个生命能够自主引导自己的行动。总是受他人指导的事物有些像是一种死物。
爱在知识的尽头开始。
没有快乐地生活是正义的特权。