Let us be well persuaded that everyone of us possesses happiness in proportion to his virtue and wisdom, and according as he acts in obedience to their suggestion.
And lastly from that period I remember riding in a taxi one afternoon between very tall buildings under a mauve and rosy sky; I began to bawl because I had everything I wanted and knew I would never be so happy again.
The perfection of wisdom, and the end of true philosophy is to proportion our wants to our possessions, our ambitions to our capacities, we will then be a happy and a virtuous people.
When I have come to you, at last (as I have always done), I have come to peace and happiness. I come home, now, like a tired traveller, and find such a blessed sense of rest!
At the door of every happy person there should be a man with a hammer whose knock would serve as a constant reminder of the existence of unfortunate people.
The secret is here in the present. If you pay attention to the present, you can improve upon it. And, if you improve on the present, what comes later will also be better." -- The Alchemist
Who is the happy Warrior? Who is he
That every man in arms should wish to be?
It is the generous spirit, who, when brought
Among the tasks of real life, hath wrought
Upon the plan that pleased his boyish thought:
Whose high endeavors are an inward light
That makes the path before him always bright:
Who, with a natural instinct to discern
What knowledge can perform, is diligent to learn;
And in himself posses his own desire
Material objects give rise to physical happiness, while spiritual development gives rise to mental happiness. Since we experience both physical and mental happiness, we need both material and spiritual development. This is why, for our own good and that of society we need to balance material progress with inner development.