When you sit with a nice girl for two hours, it seems like two minutes; when you sit on a hot stove for two minutes, it seems like two hours. That's relativity.
But our minds are bound to the yardstick of yesterday, today and tomorrow, and with that yardstick we try to inquire into the unknown, to measure that which is not measurable.
When the Special Theory of Relativity began to germinate in me, I was visited by all sorts of nervous conflicts... I used to go away for weeks in a state of confusion.
Since time is the one immaterial object which we cannot influence neither speed up nor slow down add to nor diminish it is an imponderably valuable gift.
The essence of all jokes, of all comedy, seems to be an honest or well intended halfness; a non performance of that which is pretended to be performed, at the same time that one is giving loud pledges of performance. The balking of the intellect, is comedy and it announces itself in the pleasant spasms we call laughter.
Time hath, my lord, a wallet at his back
Wherein he puts alms for oblivion,
A great-sized monster of ingratitudes:
Those scraps are good deeds past, which are devour'd
As fast as they are made, forgot as soon as done.
Rest enough for the individual man, too much and too soon, and we call it death. But for man, no rest and no ending. He must go on, conquest beyond conquest. First this little planet and all its winds and ways, and then all the laws of mind and matter that restrain him. Then the planets about him, and, at last, out across immensities to the stars. And when he has conquered all the deep space, and all the mysteries of time, still he will be beginning.