Unrequited love is the meaning of life. We’re here to love but not to be loved, to give but not receive. Our mission in this world is to improve humanity and leave a better history than we found. Only selfless love has such power. Only love without interest or expectation of reward can change human beings... To give love without receiving love is the truest love and brings the greatest happiness there is in life.
The first real mental illumination I remember to have experienced was when I saw that the universe exists in each of its individual atoms - that is, the universe is the result of a few simple processes infinitely repeated. When a drop of water has been mathematically measured, every principle will have been used which would be called form in the measurement of the heavens. All life on the globe is sustained by digestion and assimilation; when by voluntary and traumatic action these stop death follows. The history of an individual mind is the history of the race. Know one thing in its properties and relations and you will know all things.
You would hardly appreciate the comic if you felt yourself isolated from others. Laughter appears to stand in need of an echo. Listen to it carefully: it is not an articulate, clear, well-defined sound; it is something which would fain be prolonged by reverberating from one to another, something beginning with a crash, to continue in successive rumblings, like thunder in a mountain. still, this reverberation cannot go on for ever. It can travel within as wide a circle as you please: the circle remains, none the less, a closed one.
When you have overcome one temptation, you must be ready to enter the lists with another. As distrust, in some sense, is the mother of safety, so security is the gate of danger. A man had need to fear this most of all, that he fears not at all.
Some there are who are clear-sighted and do not need my teachings, and some whose eyes are clouded with dust who will not heed it though given, but between these two there are also some with but little dust in their eyes, who can be helped to see; and for the sake of these I will go back among mankind and teach.