It is said that their souls (animals) are inferior. Yes, but in the end, like us, they feel pain and joy. Their inferiority determines for us the duty of the elder brother, not the right of tyranny and oppression. The Benefits of Vegetarianism

Man's character is his fate. Fragments

The heart is able to bury deep and well what is urgently desires to forget. Beware of Pity

If the knowledge which we acquired before birth was lost to us at birth, and afterwords by the use of the senses we recovered that which we previously knew, will not that which we call learning be a process of recovering our knowledge, and may not this be rightly termed recollection by us? ...Then, Simmias, our souls must have existed before they were in the form of man—without bodies, and must have had intelligence. The Trials Of Socrates