“An existential experience of tragedy and loss is converted into technical problems that transmogrify its existential roots.”

“Christopher's digressions into maths and existential questions amplify what is, on one level, a family drama with a whodunnit attached.”

“A man's concern, even his despair, over the worthwhileness of life is an existential distress but by no means a mental disease.”

“Fossil salamanders are known from most extant families, as well as four extinct families.”

“In this model, activation of the immune system occurs as a response to evidence of an extant threat.”

“Among the 11 extant orders of arachnids, Araneae and Acari are by far the most species rich.”

“Is an existent Mother Teresa more perfect than the non-existent one?”

“Whether he did this, or whether he merely clarified an existent trend, this emphasis on measurable relations marks a turning-point in the foundation of modern science.”

“This is because, according to Justice Keen, the scope of self-defense is applicable in cases of resisting an existent threat to the party's own life.”

“All three expressed their delight at the news and had fought hard to retain the existing system.”

“Rescuers were able to locate several existing survivors in the debris.”

“Unfortunately, it has become the vogue in recent years to bolster sagging cases by applying the law of probability in an attempt to strengthen weak or nonexistent evidence.”

“Sea-urchin-like forms found in inland limestones are indeed the skeletons of sea urchins which lived in a now nonexistent sea.”

“How does a nonexistent mermaid that does not have properties differ from a nonexistent unicorn that does not have properties?”

“Now that they are no longer existant life holds no more amusement for the children.”