All worldly pursuits have but one unavoidable and inevitable end, which is sorrow; acquisitions end in dispersion; buildings in destruction; meetings in separation; births in death. Knowing this, one should, from the very first, renounce acquisitions and storing-up, and building, and meeting; and, faithful to the commands of an eminent Guru, set about realizing the Truth. That alone is the best of religious observances.

(Milarepa)