All intelligent thoughts have already been thought; what is necessary is only to try to think them again. Johann Wolfgang von Goethe
Our life is what our thoughts make it. Marcus Aurelius
Our life always expresses the result of our dominant thoughts. Soren Kierkegaard
Nothing that has been thought can ever be taken back. Friedrich Durrenmatt
Nothing requires a greater effort of thought than arguments to justify the rule of non-thought. Milan Kundera
Thought precedes action, action does not always precede thought. Doug Horton
Thought means life, since those who do not think so do not live in any high or real sense. Thinking makes the man. Amos Bronson Alcott
No one knows exactly where thought comes from, but it can be said that thought comes from the same place as whatever it is that beats our heart.. it comes from being alive. Richard Carlson
True thoughts are those alone which do not understand themselves. Theodor Adorno