“Disordered nerves are the origin of much religious despair, when the individual does not suspect it; and then the body and mind have a reciprocal influence upon each other, and it is difficult to tell which influences the other most. The physician is often blamed, when the fault lies with the minister. Depression never benefits body or soul. We are saved by hope.”

Plato, Phaedo

Source: Global Brain: The Evolution of Mass Mind from the Big Bang to the 21st Century (2000), Ch.8 Reality is a Shared Hallucination

Source: Bellum Catilinae (c. 44 BC), Chapter I

Source: Autobiography (1873)

https://archive.org/details/autobiography01mill/page/38/mode/1up p. 38

Source Book in Ancient Philosophy (1907), The Fragments

Confessions Of A Sceptic
The Nemesis of Faith (1849)
Context: Belief is the result of the proportion, whatever it he, in which the many elements which go to make the human being are combined. In some the grosser nature preponderates; they believe largely in their stomachs, in the comforts and conveniences of life, and being of such kind, so long as these are not threatened, they gravitate steadily towards the earth. Numerically this is the largest class of believers, with very various denominations indeed; bearing the names of every faith beneath the sky, and composing the conservative elements in them, and therefore commonly persons of much weight in established systems. But they are what I have called them: their hearts are where I said they were, and as such interests are commonly selfish, and self separates instead of unites, they are not generally powerful against any heavy trial. Others of keener susceptibility are yet volatile, with slight power of continuance, and fly from attraction to attraction in the current of novelty. Others of stronger temper gravitate more slowly, but combine more firmly, and only disunite again when the idea or soul of the body into which they form dies out, or they fall under the influence of some very attractive force indeed. It may be doubted, indeed, whether a body which is really organised by a living idea can lose a healthy member except by violence.

Bk. 2, Pt.. 5, Ch. 2: The Mother, p. 522
The Second Sex (1949)
Context: The curse which lies upon marriage is that too often the individuals are joined in their weakness rather than in their strength, each asking from the other instead of finding pleasure in giving. It is even more deceptive to dream of gaining through the child a plenitude, a warmth, a value, which one is unable to create for oneself; the child brings joy only to the woman who is capable of disinterestedly desiring the happiness of another, to one who without being wrapped up in self seeks to transcend her own existence.

Source: 11/22/63