C'est une maladie naturelle à l'homme de croire qu'il possède la vérité directement… - Blaise Pascal

When a soldier complains of his hard life (or a labourer, etc.) try giving him nothing to do.

And if one loves me for my judgement, memory, he does not love me, for I can lose these qualities without losing myself. Where, then, is this Ego, if it be neither in the body nor in the soul? And how love the body or the soul, except for these qualities which do not constitute me, since they are perishable? For it is impossible and would be unjust to love the soul of a person in the abstract and whatever qualities might be therein. We never, then, love a person, but only qualities.
Let us, then, jeer no more at those who are honoured on account of rank and office; for we love a person only on account of borrowed qualities.

all humanity’s problems stem from an inability to sit in a quiet room alone.”

Johnson, Fenton. At the Center of All Beauty: Solitude and the Creative Life (p. 229). W. W. Norton & Company. Kindle Edition.