Rabbi Judah ben Bezalel Lowe, known as the Maharal of Prague was famous among Jews and non-Jews alike. He was a mystic who was revered for his holiness and Torah scholarship, as well as his proficiency in mathematics, astronomy, and other sciences. Eventually, word of his greatness reached the ears of Emperor Rudolph II.
The Emperor invited the Maharal to his castle on February 23, 1592. There they conversed for one and a half hours, and developed a mutual respect for each other.
Rabbi Judah Lowe made use of his excellent connections with the Emperor, often intervening on behalf of his community when it was threatened by anti-Semitic attacks or oppression.
The Etrog grows on its tree for an entire year.
It grows from the loving summer sunlight
and from the cold winter darkness.
It grows from the furious autumn winds
and from the caresses of spring rain.
From all that comes to it, it grows.
And that is beauty.
Be an Etrog.