The quote "Love is a serious mental disease" is attributed to Plato and can be found in his work "Phaedrus." This quote reflects Plato's views on the nature of love and its potential to influence the mind and soul.

Leo Rauch has written:

'Plato's The Republic and Phaedrus, Symposium Apology,Crito, Phaedo and other works'

'Kant's Foundations of Ethics'

'Plato's the Republic'

'The philosophy of Hegel'

'The philosophy of Hegel' -- subject(s): Accessible book

The phrase "Things are not always as they seem" is commonly attributed to Phaedrus, a Roman fabulist and poet. It reflects the idea that appearances can be deceiving and that things may not always be what they initially appear to be.

It's in a play called Phaedrus by Plato. According to Socrates, it's an insanity gifted from the gods that gives people poetry, mysticism, love, and even philosophy itself.

Plato's fourth dialog is called "Phaedo." It concerns the death of Socrates.

"Phaedra" is a Greek play by Seneca the Younger (4 BC - 65 AD). The main character is Phaedra, who is based on Hippolytus, the main character in a myth as told by Euripedes (480-BC - 406 BC).