Make a habit of two things: to help; or at least to do no harm.

I also maintain that clear knowledge of natural science must be acquired, in the first instance, through mastery of medicine alone.

And if incision of the temple is made on the left, spasm seizes the parts on the right, while if the incision is on the right, spasm seizes the parts on the left.

Silence is not only never thirsty, but also never brings pain or sorrow.

The chief virtue that language can have is clearness, and nothing detracts from it so much as the use of unfamiliar words.

I am about to discuss the disease called 'sacred'. It is not, in my opinion, any more divine or more sacred that other diseases, but has a natural cause, and its supposed divine origin is due to men's inexperience, and to their wonder at its peculiar character.

Nature itself is the best physician.