Here are just a few quotes that I found for a speech class and liked a lot. I think they are all very interesting and hope they give you something to think about.
How I wish that somewhere there existed an island for those who are wise and of good will.
An intelligent hell would be better than a stupid paradise.
--Victor Hugo, Ninetythree, 1874
Some people have a large circle of friends while others have only friends that they like.
Wear the old coat and buy the new book.
Efficiency is intelligent laziness.
All intelligent thoughts have already been thought; what is necessary is only to try to think them again.
--Johann Wolfgang von Goethe
Yield to temptation. It may not pass your way again.
--Robert Heinlein, Time Enough for Love
No matter how much the cats fight, there always seem to be plenty of kittens.
If it weren't for the last minute, nothing would get done.
Unless someone like you cares a whole awful lot,
nothing is going to get better. It's not.
--Dr. Seuss, The Lorax
If you choose not to decide -- you still have made a choice!