Time has no independent existence apart from the order of events by which we measure it.
A brave man, whose only fault was being a woman.
Nothing happens until something moves.
The really valuable thing in the pageant of human life seems to me not the political state, but the creative, sentient individual, the personality; it alone creates the noble and the sublime, while the herd as such remains dull in thought and dull in feeling.
Life is a Mystery, not a problem waiting to be solved.
In conclusion I wish to say that in working at the problem here dealt with I have had the loyal assistance of my friend and colleague M. Besso, and that I am indebted to him for several valuable suggestions.