Life is Short in Chinese / Japanese...

人生は短い is “life is short” in Japanese.

The character breakdown:
人生 (jinsei) life (i.e., conception to death); human life, living, lifetime.
は (ha/wa) particle (means “is” in this case).
短い (mijikai) short.

Note: Because this selection contains some special Japanese Hiragana characters, it should be written by a Japanese calligrapher.

百歲光陰如過客 directly translates as: [Even a] hundred-year-old [person] is [just a] traveler passing by.

The simple message is, “Human life is short.” Of course, there is an unspoken suggestion that you should make the best of your time here on earth.