Spiritual? Sometimes, sure - why not?

from Carl Sagan's The Demon-Haunted World (my emphasis).

Spirit comes from the Latin word "to breathe". What we breathe is air, which is certainly matter, however thin. Despite usage to the contrary, there is no necessary implication in the word 'spiritual' that we are talking of anything other than matter (including the matter of which the brain is made), or anything outside the realm of science. On occasion, I will feel free to use the word. Science is not only compatible with spirituality; it is a profound source of spirituality. When we recognize our place in an immensity of light-years and in the passage of ages, when we grasp the intricacy, beauty, and subtlety of life, then that soaring feeling that sense of elation and humility combined, is surely spiritual. The notion that science and spirituality are somehow mutually exclusive does a disservice to both.