“We have the tendency to judge others by their surface appearance, and to find only their negative qualities. But if we search beneath the surface we discover that a myriad of strains mix together to create a particular person’s nature. The faults we perceive are likely to be the effect of circumstances, the psychological response to trauma, abuse, rejection, heartbreak, insecurity, pain, confusion, or disease.”

Source: Christ's Object Lessons (1900), Ch. 8, p. 114

Source: By the River Piedra I Sat Down and Wept

"Nietzscheism and Realism" from The Rainbow, Vol. I, No. 1 (October 1921); reprinted in "To Quebec and the Stars", and also in Collected Essays, Volume 5: Philosophy edited by S. T. Joshi, p. 71
Non-Fiction
Context: The undesirability of any system of rule not tempered with the quality of kindness is obvious; for "kindness" is a complex collection of various impulses, reactions and realisations highly necessary to the smooth adjustment of botched and freakish creatures like most human beings. It is a weakness basically—or, in some cases, and ostentation of secure superiority—but its net effect is desirable; hence it is, on the whole, praiseworthy. Since all motives at bottom are selfish and ignoble, we may judge acts and qualities only be their effects. Pessimism produces kindness. The disillusioned philosopher is even more tolerant than the priggish bourgeois idealist with his sentimental and extravagant notions of human dignity and destiny.

Existentialism Is a Humanism, lecture http://www.marxists.org/reference/archive/sartre/works/exist/sartre.htm (1946)
Context: We will freedom for freedom’s sake, in and through particular circumstances. And in thus willing freedom, we discover that it depends entirely upon the freedom of others and that the freedom of others depends upon our own. Obviously, freedom as the definition of a man does not depend upon others, but as soon as there is a commitment, I am obliged to will the liberty of others at the same time as my own. I cannot make liberty my aim unless I make that of others equally my aim.

The Hidden Wisdom In The Holy Bible (1963), Volume III

The Trouble With Being Born (1973)

Reflections on Various Subjects (1665–1678), VII. On Air and Manner
Context: Few men, nevertheless, can have unison in many matters without being a copy of each other, if each follow his natural turn of mind. But in general a person will not wholly follow it. He loves to imitate. We often imitate the same person without perceiving it, and we neglect our own good qualities for the good qualities of others, which generally do not suit us.

Nobel lecture (2005)
Context: What is more important is that these are not separate or distinct threats. When we scratch the surface, we find them closely connected and interrelated.
We are 1,000 people here today in this august hall. Imagine for a moment that we represent the world's population. These 200 people on my left would be the wealthy of the world, who consume 80 per cent of the available resources. And these 400 people on my right would be living on an income of less than $2 per day.
This underprivileged group of people on my right is no less intelligent or less worthy than their fellow human beings on the other side of the aisle. They were simply born into this fate.
In the real world, this imbalance in living conditions inevitably leads to inequality of opportunity, and in many cases loss of hope. And what is worse, all too often the plight of the poor is compounded by and results in human rights abuses, a lack of good governance, and a deep sense of injustice. This combination naturally creates a most fertile breeding ground for civil wars, organized crime, and extremism in its different forms.
In regions where conflicts have been left to fester for decades, countries continue to look for ways to offset their insecurities or project their 'power'. In some cases, they may be tempted to seek their own weapons of mass destruction, like others who have preceded them.