Word: 故 These are the Chinese grammar articles about 故, whether they focus on it or mention it. Example sentences using 故 2 sentences, showing page 1 of 1. 我写,故我在。 Wǒ xiě, gù wǒ zài. I write, therefore I am. 我思故我在。 Wǒ sī gù wǒ zài. I think, therefore I am.