In thinking, if a person begins with certainties, they shall end in doubts, but if they can begin with doubts, they will end in certainties.
~ Francis Bacon

Thoughts are things; they have tremendous power. Thoughts of doubt and fear are pathways to failure. When you conquer negative attitudes of doubt and fear you conquer failure. Thoughts crystallize into habit and habit solidifies into circumstances.
~ Bryan Adams

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

A man is literally what he thinks
~ James Allen

All that you accomplish or fail to accomplish with your life is the direct result of your thoughts.
~ James Allen

Our life is what our thoughts make it. A man will find that as he alters his thoughts toward things and other people, things and other people will alter towards him.
~ James Allen

You are today where your thoughts have brought you; you will be tomorrow where your thoughts take you.
~ James Allen

Thought is a kind of opium; it can intoxicate us, while still broad awake; it can make transparent the mountains and everything that exists.
~ Henri Frederic Amiel

It is the power of thought that gives man power over nature.
~ Hans Christian Anderson

Thinking more than others about our own thoughts is not self-centeredness. It means that if asked what's on our mind, we are less likely to mention being aware of the world around us, and more likely to mention our inner reflections. But we are less likely to mention thinking about other people.
~ Elaine N. Aron

You live with your thoughts -- so be careful what they are.
~ Eva Arrington

Thoughts of themselves have no substance; let them arise and pass away unheeded. Thoughts will not take form of themselves, unless they are grasped by the attention; if they are ignored, there will be no appearing and no disappearing.
~ Ashvaghosha

A man's life is what his thoughts make of it.
~ Marcus Aurelius

Very little is needed to make a happy life; it is all within yourself, in your way of thinking.
~ Marcus Aurelius

No man should think himself a zero, and think he can do nothing about the state of the world.
~ Bernard M. Baruch

If everybody thought before they spoke, the silence would be deafening.
~ George Barzan

No matter how hard you work for success if your thought is saturated with the fear of failure, it will kill your efforts, neutralize your endeavors and make success impossible.
~ Baudjuin

The surprises of thought are like those of love: they wear out. But here too you can carry on for a long time doing your conjugal duty.
~ Jean Baudrillard

He who thinks and thinks for himself, will always have a claim to thanks; it is no matter whether it be right or wrong, so as it be explicit. If it is right, it will serve as a guide to direct; if wrong, as a beacon to warn.
~ Jeremy Bentham

A thought which does not result in an action is nothing much, and an action which does not proceed from a thought is nothing at all.
~ Georges Bernanos