"If I had inherited a fortune I should probably not have cast my lot with mathematics."

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See, see how the sun has moved onward while we talked. Nothing can stop it in its course. Prayers cannot halt the revolving of nature. It is the same with human life. Victory and defeat are one in the vast stream of life. Victory is the beginning of defeat, and who can rest safely in victory? Impermanence is the nature of all things of this world. Even you will find your ill fortunes too will change. It is easy to understand the impatience of the old, whose days are numbered, but why should you young ones fret when the future is yours?

— Eiji Yoshikawa