There is more evidence to prove that saltness [of the sea] is due to the admixture of some substance, besides that which we have adduced. Make a vessel of wax and put it in the sea, fastening its mouth in such a way as to prevent any water getting in. Then the water that percolates through the wax sides of the vessel is sweet, the earthy stuff, the admixture of which makes the water salt, being separated off as it were by a filter.

Our feelings towards our friends reflect our feelings towards ourselves.

Let us first understand the facts and then we may seek the cause.

It is unbecoming for young men to utter maxims.

Happiness does not consist in pastimes and amusements but in virtuous activities.

Friendship is communion.

Change in all things is sweet.