Today is the feast day of Isaac the Syrian (or Isaac of Nineveh). He is remembered chiefly for his spiritual homilies, but he should also be remembered for his striking views on how we should approach the natural world, e.g.,
And what is a merciful heart? . . . The heart’s burning for all creation, for human beings, for birds and animals, and for demons, and everything there is. At the recollection of them and at the sight of them his eyes gush forth with tears owing to the force of the compassion which constrains his heart, so that, as a result of its abundant sense of mercy, the heart shrinks and cannot bear to hear or examine any harm or small suffering of anything in creation. For this reason he offers up prayer with tears at all times, even for irrational animals, and for the enemies of truth, and for those who harm him, for their preservation and being forgiven.
As a result of the immense compassion infused in his heart without measure—like God’s—he even does this for reptiles.
Troparion
In truth you were revealed to your flock as a rule of faith,
an image of humility and a teacher of abstinence;
your humility exalted you;
your poverty enriched you.
Hierarch Father Isaac,
entreat Christ our God
that our souls may be saved.
Kontakion
O Hierarch Isaac, divine thunder, spiritual trumpet,
planter of faith and pruner of heresies, great favourite of the Trinity,
while standing with the Angels before God,
pray unceasingly for us all.