"Since it is even more difficult to obtain a human life from an animal life
Than for a sea turtle's head to enter
The aperture of a yoke floating upon the great ocean,
o King, lord of humankind, make this life fruitful by practicing the sublime teaching.

One who is born as a human,
And then becomes involved in wrongdoing
Is even more foolish than one who fills
A golden vessel adorned with jewels with vomit."

Nagarjuna