Don’t waste a good sin.

“All that G‑d does is good, even the wicked person on the day of his wickedness.” (Proverbs 16:4)

Why did a G‑d who hates evil create a world where evil can take charge of a human being?

Only so that this human being would be driven yet higher than could ever be reached without sin.

Return out of fear, and the sin has not accomplished its goal. It is a wasted sin.

Return out of love, and the night has found its day. It has driven you higher.

Likutei Sichot vol. 17, pg. 190.