A child can teach an adult three things: to be happy for no reason, to always be busy with something, and to know how to demand with all his might that which he desires.
There's little of the melancholy element in her, my lord: she is never sad but when she sleeps; and not ever sad then; for I have heard my daughter say, she hath often dreamt of unhappiness, and waked herself with laughing.
Happiness is a state of mind. With physical comforts if your mind is still in a state of confusion and agitation, it is not happiness. Happiness means calmness of mind.
From the greatest to the smallest, happiness and usefulness are largely found in the same soul, and the joy of life is won in its deepest and truest sense only by those who have not shirked life's burdens.
Let the wise guard their thoughts, which are difficult to perceive, extremely subtle, and wander at will. Thought which is well guarded is the bearer of happiness.
Pierre was right when he said that one must believe in the possibility of happiness in order to be happy, and I now believe in it. Let the dead bury the dead, but while I'm alive, I must live and be happy.