It has been observed that one's nose is never so happy as when thrust into the affairs of others from which some physiologists have drawn the inference that the nose is devoid of the sense of smell.
The wise find pleasure in water; the virtuous find pleasure in hills. The wise are active; the virtuous are tranquil. The wise are joyful; the virtuous are long-lived.
Dream delivers us to dream, and there is no end to illusion. Life is like a train of moods like a string of beads, and, as we pass through them, they prove to be many-colored lenses which paint the world their own hue. . . .
I feel nothing but the accursed happiness I have dreaded all my life long: the happiness that comes as life goes, the happiness of yielding and dreaming instead of resisting and doing, the sweetness of the fruit that is going rotten.
The activity of God, which is transcendent in blessedness, is the activity of contemplation; and therefore among human activities that which is most akin to the divine activity of contemplation will be the greatest source of happiness.
If Allah has written for you happiness, no one can steal that from you, and if He has written for your heart to break, then no-one can mend it but He, so always put your trust in Allah.
Since we desire the true happiness that is brought about by a calm mind, and such peace of mind arises only from having a compassionate attitude, we need to make a concerted effort to develop compassion.