Final answer:
Nietzsche did not literally refer to 'old frigid and tedious frogs,' but used metaphors to criticize certain moralists of his time. In particular, he explored the creation of morality through denial in his parable of lambs and birds of prey, which is illustrative of his critique of what he perceived as life-denying values.
Step-by-step explanation:
The phrase “old frigid and tedious frogs” does not appear to have a direct citation from Friedrich Nietzsche. However, Nietzsche often criticized what he saw as the conventional and life-denying moralities of his day.
He may have used this or similar language metaphorically to describe those he saw as lacking in vitality and creativity, much as he describes lambs reproaching birds of prey in his parable explaining the origin of morality.
Nietzsche's view on morality can be understood through his parable where the weak, represented by lambs, create moral systems that favor themselves and demonize the strong, represented by the birds of prey.
This concept appears in Nietzsche's book “On the Genealogy of Morality,” where he argues that morality is born in the denial of the natural predatory relationship between the birds and the lambs.
In examining Nietzsche's work and philosophy holistically, one can discern Nietzsche's disdain for passive acceptance of traditional morals and ideals without critical examination or the vigor to create one's own values.
His critique often targeted those he perceived as complacent or decadent in the face of life's challenges and potentials, which could be seen metaphorically as being “old frigid and tedious frogs.”