The more necessary a thing is for living beings, the more easily it is found and the cheaper it is; the less necessary it is, the rarer and dearer it is.
There is no difference between the worry of a human mother and an animal mother for their offspring. A mother’s love does not derive from the intellect but from the emotions, in animals just as in humans.
Medical practice is not knitting and weaving and the labor of the hands, but it must be inspired with soul and be filled with understanding and equipped with the gift of keen observation.
It is hard for a woman with whom an uncircumcised man has had sexual intercourse to separate from him. In my opinion this is the strongest of the reasons for circumcision.
Consequently he who wishes to attain to human perfection, must therefore first study Logic, next the various branches of Mathematics in their proper order, then Physics, and lastly Metaphysics.
Contrast the experience with something worse and you cannot help feeling happy and grateful because. The change from trouble to comfort gives us more pleasure than uninterrupted comfort does.
