Tzaddik (Holy Person)

The true tzaddikim, who are supernal, holy beings, in their essence rise beyond all toil and fatigue. They would be satisfied to endure toil and trouble, suffering and difficulty, sacrifice and backbreaking labor, in order to do the will of the living God and King of the world, the Creator of their souls, the King of Israel and its Redeemer, the Master of all creatures and God of all spirits. But despite their readiness to do so, they are filled with tranquility and peace.

The stream of delights flows constantly in their holy souls. A breath of richness and abundance suffuses their breath, spirit and body, their entire inner being, their bones and flesh. From the midst of the delight of this supernal glory, they take pleasure in a supernal fear and love as they serve God in their spirits' every breath and in the entirety of their lives and movements.

Orot Hakodesh I, pp. 168-69

A person who is connected with love to the totality of existence, desiring its rectification and goodness, is also connected to the wicked and wrongdoers within it. This creates the possibility of damaging the holiness of his pure soul, which desires only holiness and true goodness. Still, the spirit of the tzaddik, who loves all of existence, grows so strongly with love of all creatures, love of humanity, and, in particular, the love of Israel, that nothing repels him—not even the fear that he himself will become spiritually flawed.

Orot Hakodesh III, pp. 319-20