Soch Budh ki, samajh Guru ki, ant Ketu ka, Rahu shuru ki.
The thought is of Mercury, the understanding is of Jupiter, the end is of Ketu, the beginning is of Rahu.
In one brilliant, poetic verse, Dr. Rishi Rohit Sharma summarizes the entire psychological and spiritual timeline of human existence through four planets:
1. The Beginning (Rahu): Rahu is the spark of desire, the sudden impulse, and the obsession that starts ("shuru ki") every worldly pursuit. 2. The Thought (Budh): Mercury provides the raw intelligence, the logic, and the calculation ("soch") needed to execute the desire. 3. The Understanding (Guru): Jupiter provides the deep wisdom, the maturity, and the moral understanding ("samajh") of what you are doing. 4. The End (Ketu): Ketu is the ultimate detachment, the liberation (Moksha), and the final end ("ant") of all worldly desires.