According to accounts of the Buddha's life, it would seem that he had a very deep relationship with nature. He was not born in the royal palace but in a park, under a sala tree. He attained complete enlightenment under the bodhi tree and left this earth to enter Parinirvana, again, between three sala trees. It would seem that the Buddha was very fond of trees.
It is not the pursuit of greater and greater states of happiness and bliss that leads to enlightenment, but the yearning for Reality and the rabid dissatisfaction with living anything less than a fully authentic life.
One always begins with the simple, then comes the complex, and by superior enlightenment one often reverts in the end to the simple. Such is the course of human intelligence.
In dealing with the arrogant asserter of doubt, it is not the right method to tell him to stop doubting. It is rather the right method to tell him to go on doubting, to doubt a little more, to doubt every day newer and wilder things in the universe, until at last, by some strange enlightenment, he may begin to doubt himself.
Eating meat is a leftover of the greatest brutality [killing]; the transition to vegetarianism is the first and most natural consequence of enlightenment.