A man, and a cat, and a dog, are all animals. These particular examples, as man, or dog, or cat, are parts of a bigger and more general concept, animal. The man, and the cat, and the dog, and the plant, and the tree, all come under the still more general concept, life. Again, all these, all beings and all materials, come under the one concept of existence, for we all are in it.
The Complete Works of the Swami Vivekananda (ed. 1915)