Do not be subtle about this, do not think far away, lost in doubt. 

There is certainly justice in your world, and compassion and good will as much as you bring them into this Spanish inn. The rest depends on other people like you.

”The world as it is” is quite bad.  If we surrender to it, “we shall leave this world as foolish and as wicked as we found it on our arrival” as Voltaire wrote [1].  But if we colonize our limited life-space with the justice and kindness that is in our power, the world as we make it and as we enjoy it during our own lifetime can be much better.

You do not live in the whole Universe where you are nothing and where you count for naught  - that is the point of view of the stars, not ours - you live in your , much smaller world, where you can do a lot.

You live in a sphere, an existential bubble which you carry with you like a snail shell, in which you can shelter some goodness, sincerity and beauty, or at least some fairness and some justice - simply because you practice these things. It is in your power to chose an eye for an eye or turning the other cheek, that will be your world.  It is here that gratitude exists if you believe in it and it is here that if you are a friend, you will have friends.

Be polite and your world will be more polite , certainly more civil and easier to live than the venomous unforgiving world of the pushy and the paranoid. "You may say I am a dreamer. But I'm not the only one..."

Miraculously, a good part of the human world, said to be “objective”, is dependent on us too; many people are as you come up to them, as you make them be, as you believe them to be. This is why if in contrast, the whole world smells fish, you must wash your nose.

In my life I found repeatedly that I was treated kindly and saved from danger by people known to be bad, generously by persons who did not expect return and justly by doubtful individuals. The opposite was also true.  

Friends for life did not betray me, with one pathetic exception; could I have survived without my kin? No. Strangely, I was able to give much more to complete strangers than to those I owe gratitude. That spontaneous goodness, that "weakness" in a tough world, the fact that I feel sorry for myself and therefore I also feel sorry for other beings, those free and arbitrary acts of help, care and justice, made me feel entitled to keep receiving all the unmerited support which I am given. Without that, I would live bankrupt inside, an insolvent debtor, forever guilty and dishonourable. 

There is certainly some goodness in the world if you do something good or fair or right. Be kind and lo! Kindness is born again! Smile to one and good will sprouts. There is trust in the world if you start trusting people whenever you can; distrust and you live the prisoner's dilemma. Be a friend and you will have friends. Once you did these good things, as if by magic, you are entitled to request the same from other people. Indulge in random acts of kindness. For those who cannot understand my words life is bitter and poisoned forever. They will find only what they expect to find.

Maybe you are disappointed by the lack of reward for your compassion and justice. Consider it a lottery, then; often you lose rarely you win. There is still some justice in the world, at least because action begets reaction, fullness empties and emptiness fills sooner or later. Everything is paid in some way, usually through its own effects in time. Things carry their justice in their nature. What you stretch too much breaks. As you sow, so you reap. What you do not use rusts. What you buy cheap is cheap. Easy come easy go. Who seeds wind will harvest storm. What goes around comes around. Boring wisdom, so true that it seems worn out.

Patience to wait by the riverside helps all this to become true...

Certainly all I claim does not replace doing what humans must do. In one hundred occasions there may be ninety-nine when you don’t have much choice; but there is one when you can choose freely to be good and beautiful or at least just. That one choice decides who you are. 

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[1] Arthur Schopenhauer , The Wisdom of Life and Other Essays,  tr. B. Saunders and E. B. Bax, Dunne, Washington and London
The original: « Nous laisserons, vous et moi, madame, ce monde-ci aussi sot, aussi méchant que nous l'avons trouvé en y arrivant… »
« Lettre à Madame la comtesse de Lutzelbourg », dans Œuvres complètes de Voltaire, éd. Garnier frères, 1877, vol. 40, 19 mars 1760, lettre 4074, p. 332