Whatever the mind of man can conceive and believe, it can achieve.
Napoleon Hill, W. Clement Stone
Very little is needed to make a happy life; it is all within yourself, in your way of thinking.
Marcus Aurelius
No problem can withstand the assault of sustained thinking.
Voltaire
Clear thinking requires courage rather than intelligence.
Thomas Szasz
You must continue to gain expertise, but avoid thinking like an expert.
Denis Waitley
A great many people think they are thinking when they are merely rearranging their prejudices.
William James
Let our advance worrying become advance thinking and planning.
Winston Churchill
Thinking is easy, acting is difficult, and to put one's thoughts into action is the most difficult thing in the world.
Johann Wolfgang von Goethe
Most of us are consumed with our own thoughts and desires and are not always thinking about what other people may want. This is not necessarily being egocentric; it is just being human.
Bo Bennett
The reason why so few people are agreeable in conversation is that each is thinking more about what he intends to say than others are saying.
Francois de La Rochefoucauld
Rarely do we find men who willingly engage in hard, solid thinking. There is an almost universal quest for easy answers and half-baked solutions. Nothing pains some people more than having to think.
Martin Luther King, Jr.
Most of one's life is one prolonged effort to prevent oneself thinking.
Aldous Huxley
Don't think. Thinking is the enemy of creativity. It's self-conscious, and anything self-conscious is lousy. You can't try to do things. You simply must do things.
Ray Bradbury
Our thinking and our behaviour are always in anticipation of a response. It is therefore fear-based.
Deepak Chopra
Misery is almost always the result of thinking.
Joseph Joubert