Love is a grave mental illness.

... for this discovery of yours will create forgetfulness in the learners' souls, because they will not use their memories; they will trust to the external written characters and not remember of themselves.

The honour of parents is a fair and noble treasure to their posterity, but to have the use of a treasure of wealth and honour, and to leave none to your successors, because you have neither money nor reputation of your own, is alike base and dishonourable.

Man is the plumeless genus of bipeds, birds are the plumed.

Just as it would be madness to settle on medical treatment for the body of a person by taking an opinion poll of the neighbors, so it is irrational to prescribe for the body politic by polling the opinions of the people at large.

The qualities which a man seeks in his beloved are those characteristics of his own soul, whether he knows it or not.

Music and rhythm find their way into the secret places of the soul