A liar should have a good memory.
One good turn deserves another.
The best plan is to profit by the folly of others.
The advice of friends must be received with a judicious reserve; we must not give ourselves up to it and follow it blindly, whether right or wrong.
There is always something new out of Africa.
Indeed, what is there that does not appear marvelous when it comes to our knowledge for the first time? How many things, too, are looked upon as quite impossible until they have been actually effected?
In comparing various authors with one another, I have discovered that some of the gravest and latest writers have transcribed, word for word, from former works, without making acknowledgment.
Would that the Roman people had a single neck [to cut off their head].