Quotes generally can be very dull just because there are so many. Some are trite, stale and similar or have been reworded many different times over. But - there are also some very wise words passed on down through many centuries. Some of these, if contemplated and fixed in the mind, can alter lives in a very positive manner. I know that claiming a few of these words and suggestions on several select topics can be immensely helpful.
There is a treasury of life enhancing tips and humorous sayings at The Quote Garden
. If you like quotations this is a good well organized site where you can look for topics that interest you, and perhaps start a collection too. I go there regularly.
"All truly wise thoughts have been thought already thousands of times; but to make them truly ours, we must think them over again honestly, till they take root in our personal experience." - Johann von Goethe (1749-1832)