In case you want to enrich your discussion topics, do a warm-up activity in class, or make a poster for your classroom walls, the quotationspage.com will provide you with over 26,000 quotations online from over 3,100 authors.
One of my favourite quotations these days:
" Most people are other people. Their thoughts are someone elses opinions, their lives a mimicry, their passions a quotation."
Oscar Wilde Irish dramatist, novelist, & poet (1854 - 1900)